A risk inventory management system and method for scrap steel enterprises

Abstract

The present invention discloses a risk inventory management system and method for scrap steel enterprises, and belongs to the technical field of scrap steel. It includes: an inventory entry subsystem, a risk inventory reporting subsystem, and a risk inventory publishing subsystem. The present invention solves the problem that the existing method cannot intuitively display the risk inventory profit and loss situation. After each branch and subsidiary fills in the data, the risk inventory profit and loss situation is automatically calculated, and the historical risk inventory profit and loss situation can be reviewed at any time, so as to realize real-time monitoring of the risk inventory profit and loss situation, and assist the branches and subsidiaries and the head office in making decisions; by granting access rights to supervisors of the head office and each branch and subsidiary, non-supervisory personnel are prevented from arbitrarily accessing the risk inventory profit and loss information, and the possibility of data damage is avoided; and a hash function is used to encrypt the data of the inventory entry subsystem to prevent tampering, so as to ensure the security of the data after entry and improve the accuracy of the risk inventory profit and loss accounting.

Description

Technical Field

[0001] The present invention relates to the technical field of scrap steel, and in particular to a risk inventory management system and method for a scrap steel enterprise. Background Art

[0002] Scrap steel companies will generate scrap steel inventory during the course of their business. Among them, the inventory that has not locked in sales orders when entering the scrap steel company's warehouse area will be affected by market price fluctuations, which will affect the actual price of the current inventory. It needs to be managed to maximize the profits of the scrap steel company.

[0003] However, there is no mature technology to accurately quantify it, and it is impossible to intuitively display the profit and loss situation of the current risk inventory, which affects related decisions and increases the losses of scrap steel companies. Summary of the invention

[0004] The purpose of the present invention is to provide a risk inventory management system and method for scrap steel enterprises, which can automatically calculate the risk inventory profit and loss situation after the branches and subsidiaries fill in the data, and can review the historical risk inventory profit and loss situation at any time, so as to realize real-time monitoring of the risk inventory profit and loss situation and assist the branches and subsidiaries and the head office in making decisions; by granting access rights to supervisors of the head office and branches and subsidiaries, it is prevented that non-supervisory personnel arbitrarily access the risk inventory profit and loss information and avoid the possibility of data damage; and a hash function is used to encrypt the data of the inventory entry subsystem to prevent tampering, thereby ensuring the security of the data after entry, improving the accuracy of the risk inventory profit and loss accounting, and solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A risk inventory management system for scrap steel enterprises, comprising:

[0007] The inventory entry subsystem is used to record inventory changes and transaction prices when conducting scrap steel trading business in various base warehouses under the jurisdiction of branches and subsidiaries, and form original inventory information; original business data includes: base inventory limit, total amount of scrap steel inventory of unlocked customers, reported average price, market average price, and mortgage guarantee amount;

[0008] The risk inventory reporting subsystem is used to report the relevant original business data of each base warehouse area within the jurisdiction, so that branches and subsidiaries can check the original inventory information; the original inventory information includes: querying the daily inventory information of each warehouse area of ​​the branch and subsidiary and its corresponding average price per ton;

[0009] The risk inventory release subsystem is used to classify the branches and subsidiaries by base type and preliminarily calculate the risk inventory profit and loss. After the calculation is completed, the batch data is released through the head office for subsequent review by the branches and subsidiaries and the head office. The risk inventory data includes: inventory that has not locked sales orders when entering the scrap steel enterprise warehouse area.

[0010] Furthermore, the risk inventory publishing subsystem includes:

[0011] The publishing submodule is used to publish and check the risk inventory profit and loss;

[0012] The authorization submodule is used to establish the list of supervisors of the head office and each branch and subsidiary, and grant the supervisors of the head office and each branch and subsidiary access rights to risk inventory profit and loss using the symmetric key method;

[0013] The feedback submodule is used to send feedback messages to the supervisors of each branch and subsidiary in a timely manner through corporate WeChat or SMS after the head office releases the risk inventory profit and loss, reminding the supervisors of each branch and subsidiary to check the risk inventory profit and loss in a timely manner.

[0014] Furthermore, detailed information on the average price and the average market price to be reported includes: branch and subsidiary company name, base name, material name, total weight, average inventory price (excluding tax), and amount (excluding tax).

[0015] Furthermore, the formula for calculating the average inventory price is as follows:

[0016] The system obtains the current inventory of each raw material in all warehouses, divides it into raw materials and finished products according to the material attributes, and calculates the system inventory unit price of each material according to the following formula:

[0017] Average price of raw material inventory = (beginning inventory amount + daily raw material purchase amount) / (beginning raw material inventory + daily raw material purchase amount);

[0018] Average price of finished product inventory = (beginning finished product inventory amount + day's finished product purchase warehousing amount + day's raw material quantity corresponding to the processing order * day's average price of raw material inventory) / (beginning finished product inventory amount + day's purchase warehousing amount + day's processing warehousing amount);

[0019] Then calculate the current inventory cost according to the following formula:

[0020] Raw material inventory cost = beginning raw material inventory cost + raw material purchase amount - outbound quantity (processing + sales) * average raw material inventory price;

[0021] Finished product inventory cost = finished product inventory cost for the period + finished product purchase warehousing amount + processing warehousing quantity * average price of raw material inventory - sales outbound quantity * average price of finished product inventory;

[0022] The total inventory cost for each base is calculated using the following formula:

[0023] Average inventory price = [SUM (raw material inventory cost) + SUM (finished product inventory cost)] / current base total inventory.

[0024] Furthermore, the risk inventory reporting subsystem includes:

[0025] The reporting submodule is used to report the relevant original business data of each base storage area within the jurisdiction;

[0026] The encryption submodule is used to encrypt the data entered into the risk inventory reporting subsystem using a hash function, and verify whether the data has been tampered with by comparing the hash value.

[0027] Furthermore, the content of the risk inventory publishing subsystem for subsequent review by branches and subsidiaries and the head office includes: the head office queries the data reported by each branch and subsidiary in the risk inventory, and the branch and subsidiary reviews all profit and loss data historically released by the company as a basis for further decision-making; when the head office releases the profit and loss data of this batch of risk inventory, the head office queries all profit and loss data historically released by all branches and subsidiaries in the risk inventory.

[0028] Furthermore, the risk inventory profit and loss is preliminarily calculated, and the calculation formula is as follows:

[0029] Current profit and loss estimate (tax included) = [market average price (tax excluded) - average scrap steel inventory price (tax excluded)] * ​​total scrap steel inventory of unsecured customers * 1.13;

[0030] The current profit and loss estimate (tax included, minus margin) calculation formula is divided into three cases:

[0031] Case 1: Current estimated profit and loss (tax included) >= 0, current estimated profit and loss (tax included, minus margin) = current estimated profit and loss (tax included);

[0032] Case 2: The current estimated profit and loss (tax included) < 0 and the mortgage guarantee amount + the current estimated profit and loss (tax included) > = 0, and the current estimated profit and loss (tax included, minus the deposit) = 0;

[0033] Case 3: The current estimated profit and loss (tax included) is less than 0 and the mortgage guarantee amount + the current estimated profit and loss (tax included) is less than 0. The current estimated profit and loss (tax included, minus the deposit) = the mortgage guarantee amount + the current estimated profit and loss (tax included).

[0034] A risk inventory management method for a scrap steel enterprise comprises the following steps:

[0035] Step 1: Record the inventory changes and transaction prices of each base warehouse area under its jurisdiction through branches and subsidiaries, and fill in the relevant original business data of each base warehouse area;

[0036] Step 2: The head office and the branch company lock the login access rights of the risk inventory publishing subsystem by verifying the symmetric key;

[0037] Step 3: After the branches and subsidiaries are classified by base type and the risk inventory profit and loss are calculated and confirmed to be the same, the head office will review and issue the current risk inventory report;

[0038] Step 4: The head office searches the risk inventory for the data reported by each branch and subsidiary and the risk inventory profit and loss of each branch and subsidiary;

[0039] Step 5. Branches and subsidiaries review all profit and loss data published historically by the company to further provide decision-making basis for optimizing inventory.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] 1. The present invention can automatically calculate the current risk inventory profit and loss situation after each branch and subsidiary fills in the corresponding data, and can review the historical risk inventory profit and loss situation at any time to view the trend, thereby realizing real-time monitoring of the risk inventory profit and loss situation and assisting the branches and subsidiaries and the head office in making decisions.

[0042] 2. The present invention grants access rights to supervisory personnel of the head office and branches and subsidiaries, and uses symmetric keys to obtain access rights to risk inventory profit and loss information, thereby preventing non-supervisory personnel from arbitrarily accessing risk inventory profit and loss information and avoiding the possibility of data damage; at the same time, a hash function is used to encrypt the data of the inventory entry subsystem, and the hash value is compared to verify whether the data has been tampered with, thereby ensuring the security of the data after entry and improving the accuracy of risk inventory profit and loss accounting. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a screenshot of the inventory entry subsystem page of the present invention;

[0044] Figure 2 This is a screenshot of the details page of the inventory entry subsystem of the present invention;

[0045] Figure 3 This is a screenshot of the risk inventory reporting subsystem page of the present invention;

[0046] Figure 4 This is a screenshot of the molecular and company dimensions of the risk inventory publishing subsystem page of the present invention;

[0047] Figure 5 This is a screenshot of the base type dimension of the risk inventory publishing subsystem page of the present invention;

[0048] Figure 6 This is a screenshot of the molecular and company dimensions of the risk inventory query subsystem page of the present invention;

[0049] Figure 7 This is a screenshot of the base type dimension of the risk inventory query subsystem page of the present invention. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In order to solve the technical problem that there is no mature technology to accurately quantify it, it is impossible to intuitively display the profit and loss of the current risk inventory, which affects relevant decisions and increases the losses of scrap steel enterprises, please refer to Figure 1-Figure 7 , this embodiment provides the following technical solutions:

[0052] A risk inventory management system for scrap steel enterprises, comprising:

[0053] Operation entity: head office, branches and subsidiaries;

[0054] The inventory entry subsystem is used to record inventory changes and transaction prices when conducting scrap steel trading business in various base warehouses under the jurisdiction of branches and subsidiaries, and form original inventory information; original business data includes: base inventory limit, total amount of scrap steel inventory of unlocked customers, reported average price, market average price, and mortgage guarantee amount;

[0055] like Figure 1-2 : Each branch and subsidiary can enter inventory information on the inventory entry subsystem page after purchasing and selling. The specific average price and market average price details include: branch and subsidiary name, base name, material name, total weight, average inventory price (excluding tax), and amount (excluding tax);

[0056] The formula for calculating the average inventory price is as follows:

[0057] The system obtains the current inventory of each raw material in all warehouses, divides it into raw materials and finished products according to the material attributes, and calculates the system inventory unit price of each material according to the following formula:

[0058] Average price of raw material inventory = (beginning inventory amount + daily raw material purchase amount) / (beginning raw material inventory + daily raw material purchase amount);

[0059] Average price of finished product inventory = (beginning finished product inventory amount + day's finished product purchase warehousing amount + day's raw material quantity corresponding to the processing order * day's average price of raw material inventory) / (beginning finished product inventory amount + day's purchase warehousing amount + day's processing warehousing amount);

[0060] Then calculate the current inventory cost according to the following formula:

[0061] Raw material inventory cost = beginning raw material inventory cost + raw material purchase amount - outbound quantity (processing + sales) * average raw material inventory price;

[0062] Finished product inventory cost = finished product inventory cost for the period + finished product purchase warehousing amount + processing warehousing quantity * average price of raw material inventory - sales outbound quantity * average price of finished product inventory;

[0063] The total inventory cost for each base is calculated using the following formula:

[0064] Average inventory price = [SUM (raw material inventory cost) + SUM (finished product inventory cost)] / current base total inventory.

[0065] The risk inventory reporting subsystem is used to report the relevant original business data of each base warehouse area within the jurisdiction, so that branches and subsidiaries can check the original inventory information; the original inventory information includes: querying the daily inventory information of each warehouse area of ​​the branch and subsidiary and its corresponding average price per ton;

[0066] like Figure 4-5 : List query includes reporting date and release name information. Click the query button to display the risk inventory table profit and loss situation in two dimensions. The head office can click the release button to release it, and the branch companies can check the released risk inventory table information.

[0067] like Figure 4 : The risk inventory table's branch and subsidiary dimension contains the following information: branch and subsidiary, unblocked customer inventory (tons), current profit and loss estimate (tax included), current profit and loss estimate (tax included, minus margin)

[0068] like Figure 5 : The base type dimension of the risk inventory table includes the following information: base type, unlocked customer inventory (tons), current profit and loss estimate (tax included), current profit and loss estimate (tax included, minus margin). The unlocked customer inventory refers to the amount of "unlocked customer inventory" reported by the branch or subsidiary.

[0069] Preliminary calculation of risk inventory profit and loss, the calculation formula is as follows:

[0070] Current profit and loss estimate (tax included) = [market average price (tax excluded) - average scrap steel inventory price (tax excluded)] * ​​total scrap steel inventory of unsecured customers * 1.13;

[0071] The current profit and loss estimate (tax included, minus margin) calculation formula is divided into three cases:

[0072] Case 1: Current estimated profit and loss (tax included) >= 0, current estimated profit and loss (tax included, minus margin) = current estimated profit and loss (tax included);

[0073] Case 2: The current estimated profit and loss (tax included) < 0 and the mortgage guarantee amount + the current estimated profit and loss (tax included) > = 0, and the current estimated profit and loss (tax included, minus the deposit) = 0;

[0074] Case 3: The current estimated profit and loss (tax included) is less than 0 and the mortgage guarantee amount + the current estimated profit and loss (tax included) is less than 0. The current estimated profit and loss (tax included, minus the deposit) = the mortgage guarantee amount + the current estimated profit and loss (tax included).

[0075] The risk inventory reporting subsystem includes:

[0076] The reporting submodule is used to report the relevant original business data of each base storage area within the jurisdiction;

[0077] like Figure 3 : List query includes branch, subsidiary, statistical date, base name, base type information. The list displays branch, subsidiary, base name, base type, total system inventory, and average inventory price (excluding tax);

[0078] Branches and subsidiaries shall fill in a total of 7 fields, including the base inventory upper limit, the total scrap steel inventory of unlocked customers, the reported average price, the market average price, the mortgage guarantee amount, the person filling in the report, and the reporting date, and then submit the report. If the average scrap steel inventory price is different from the average inventory price, the average scrap steel inventory price can be filled in manually. If there is no difference, it can be left blank. The market average price (excluding tax) is the manually filled sales price of the base to the terminal steel mill or the purchasing price of steel mills in the surrounding market.

[0079] The encryption submodule is used to encrypt the data entered into the risk inventory reporting subsystem by using a hash function, and verify whether the data has been tampered with by comparing the hash value; specifically, firstly, the data to be encrypted in the risk inventory reporting subsystem is used as input content, and the input plain text data is processed by using the hash function, and the input data is converted into a hash value of a fixed length by the hash function; after being processed by the hash function, a hash value of a fixed length is output, and the hash value is used as a unique verification mark to determine whether the data has been tampered with, and the uniqueness of the hash value is utilized to verify the integrity of the data by comparing the stored hash value and the recalculated hash value; if the two match, it means that the data has not been tampered with during the storage process; if the two do not match, it means that the data has been tampered with during the storage process; through the above steps, the security of the data after entry is ensured, and data errors are prevented from affecting the risk inventory accounting, thereby improving the accuracy of the risk inventory profit and loss accounting.

[0080] The risk inventory publishing subsystem is used to classify the risk inventory by base type through branches and subsidiaries, and preliminarily calculate the risk inventory profit and loss. After the calculation is completed, the batch of data is released through the head office for subsequent review by the branches and subsidiaries and the head office; specifically, the head office queries the data reported by each branch and subsidiary in the risk inventory, and the branches and subsidiaries check all the profit and loss data historically released by the company as a basis for further decision-making; when the head office releases the batch of risk inventory profit and loss data, the head office queries all the profit and loss data historically released by all branches and subsidiaries in the risk inventory; among them, the risk inventory data includes: inventory that has not locked sales orders when entering the scrap steel enterprise warehouse area.

[0081] Specifically, the report content is consistent with the above-mentioned risk inventory release report, which can display the risk inventory information after being released by the head office; the list query includes release version, branch company, account set, and market change information. Click the query button to display the risk inventory table profit and loss situation in two dimensions.

[0082] like Figure 6 : The risk inventory table's branch and subsidiary dimension contains the following information: branch and subsidiary, unblocked customer inventory (tons), current profit and loss estimate (tax included), current profit and loss estimate (tax included, minus margin)

[0083] like Figure 7 : The base type dimension of the risk inventory table includes the following information: base type, unlocked customer inventory (tons), current profit and loss estimate (tax included), current profit and loss estimate (tax included, excluding deposit), unlocked customer inventory (tons), current profit and loss estimate (tax included), current profit and loss estimate (tax included, excluding deposit) have the same meaning and calculation formula as above.

[0084] Risk inventory release subsystem, including:

[0085] The release submodule is used to release and check the risk inventory profit and loss; specifically, it includes the following functions: the head office queries the data reported by each branch and subsidiary in the risk inventory reporting submodule, the head office queries the risk inventory profit and loss of each branch and subsidiary, and after the head office clicks the release button, the branch and subsidiary can check the risk inventory profit and loss information in the risk inventory release submodule.

[0086] The authorization submodule is used to establish a list of supervisors for the head office and each branch and subsidiary, and to grant risk inventory profit and loss access rights to supervisors for the head office and each branch and subsidiary using the symmetric key method. Specifically, by generating a symmetric key, before each supervisor attempts to access resources, the system verifies the identity of each supervisor through a secure channel, such as user name and password. The system confirms the legitimacy of each supervisor by comparing the stored credentials. When the identity authentication of each supervisor is successful, the system assigns the symmetric key to each supervisor to ensure that only authorized users can obtain the key. The user encrypts the data using the assigned symmetric key, and can only decrypt the data and obtain data access rights by using the same key. At the same time, the system can further set the access rights of each supervisor to different resources according to the authority and department of each supervisor, thereby ensuring that even if the key is leaked, unauthorized users cannot access the protected data. Based on this, the symmetric key method can effectively realize the control of user authorized access and ensure the security and integrity of data after entry.

[0087] The feedback submodule is used to send feedback messages to the supervisors of each branch and subsidiary in a timely manner through enterprise WeChat or text messages after the head office releases the risk inventory gain and loss, reminding the supervisors of each branch and subsidiary to check the risk inventory gain and loss in a timely manner; specifically, after the head office releases the risk inventory gain and loss, the information can only be displayed in the risk inventory management system. If the supervisors of each branch and subsidiary do not log in to the system or miss the release message displayed by the system, it will affect the efficiency of each branch and subsidiary in querying data; therefore, feedback messages are sent to the supervisors of each branch and subsidiary in a timely manner through enterprise WeChat or text messages to ensure that the supervisors of each branch and subsidiary are informed of the information released by the head office in a timely manner, thereby improving the work efficiency of each branch and subsidiary.

[0088] In order to better demonstrate the operation process of a risk inventory management system for a scrap steel enterprise, the present invention provides a risk inventory management method for a scrap steel enterprise, comprising the following steps:

[0089] Step 1: Record the inventory changes and transaction prices of each base warehouse area under its jurisdiction through branches and subsidiaries, and fill in the relevant original business data of each base warehouse area;

[0090] Step 2: The head office and the branch company lock the login access rights of the risk inventory publishing subsystem by verifying the symmetric key;

[0091] Step 3: After the branches and subsidiaries are classified by base type and the risk inventory profit and loss are calculated and confirmed to be the same, the head office will review and issue the current risk inventory report;

[0092] Step 4: The head office searches the risk inventory for the data reported by each branch and subsidiary and the risk inventory profit and loss of each branch and subsidiary;

[0093] Step 5. Branches and subsidiaries review all profit and loss data published historically by the company to further provide decision-making basis for optimizing inventory.

[0094] The beneficial effects achieved by the above content: Through the above steps, the method is easy to operate. After the branches and subsidiaries fill in the corresponding data, the current risk inventory profit and loss situation can be automatically calculated, and the historical risk inventory profit and loss situation can be viewed at any time to view the trend, realizing real-time monitoring of risk inventory profit and loss situation, assisting branches and subsidiaries and the head office in decision-making; at the same time, preventing data from being tampered with, ensuring the security of data after entry, and improving the accuracy of risk inventory profit and loss accounting.

[0095] Working principle: Branches and subsidiaries record the inventory changes, transaction prices and relevant original business data of each base warehouse area under their jurisdiction. The head office and branches and subsidiaries lock the login access rights of the risk inventory publishing subsystem by verifying the symmetric key; branches and subsidiaries are classified by base type, and after calculating the risk inventory profit and loss situation, they are submitted to the head office for review and release of the current risk inventory report; the head office queries the data reported by each branch and subsidiary and the risk inventory profit and loss situation of each branch and subsidiary in the risk inventory, and the branches and subsidiaries view all the profit and loss data historically released by the company, thereby further providing a decision-making basis for optimizing inventory.

[0096] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0097] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A risk inventory management system for scrap steel enterprises, characterized in that: include: The inventory entry subsystem is used to record inventory changes and transaction prices when conducting scrap steel trading business in various base warehouses under the jurisdiction of branches and subsidiaries, and form original inventory information; The original business data includes: base inventory limit, total inventory of unlocked customers’ scrap steel, reported average price, market average price, and mortgage guarantee amount; The risk inventory reporting subsystem is used to report the relevant original business data of each base warehouse area within the jurisdiction, so that branches and subsidiaries can check the original inventory information; the original inventory information includes: querying the daily inventory information of each warehouse area of ​​the branch and subsidiary and its corresponding average price per ton; The risk inventory release subsystem is used to classify the branches and subsidiaries by base type and preliminarily calculate the risk inventory profit and loss. After the calculation is completed, the batch data is released through the head office for subsequent review by the branches and subsidiaries and the head office. The risk inventory data includes: inventory that has not locked sales orders when entering the scrap steel enterprise warehouse area.

2. The risk inventory management system for scrap steel enterprises according to claim 1, characterized in that: The risk inventory publishing subsystem includes: The publishing submodule is used to publish and check the risk inventory profit and loss; The authorization submodule is used to establish the list of supervisors of the head office and each branch and subsidiary, and grant the supervisors of the head office and each branch and subsidiary access rights to risk inventory profit and loss using the symmetric key method; The feedback submodule is used to send feedback messages to the supervisors of each branch and subsidiary in a timely manner through corporate WeChat or SMS after the head office releases the risk inventory profit and loss, reminding the supervisors of each branch and subsidiary to check the risk inventory profit and loss in a timely manner.

3. The risk inventory management system for scrap steel enterprises according to claim 1, characterized in that: The detailed information of the average price and the average market price to be reported includes: branch and subsidiary name, base name, material name, total weight, average inventory price, and amount.

4. A scrap steel enterprise risk inventory management system according to claim 3, characterized in that: The formula for calculating the average inventory price is as follows: The system obtains the current inventory of each raw material in all warehouses, divides it into raw materials and finished products according to the material attributes, and calculates the system inventory unit price of each material according to the following formula: Average price of raw material inventory = (beginning inventory amount + daily raw material purchase amount) / (beginning raw material inventory + daily raw material purchase amount); Average price of finished product inventory = (beginning finished product inventory amount + day's finished product purchase warehousing amount + day's raw material quantity corresponding to the processing order * day's average price of raw material inventory) / (beginning finished product inventory amount + day's purchase warehousing amount + day's processing warehousing amount); Then calculate the current inventory cost according to the following formula: Raw material inventory cost = beginning raw material inventory cost + raw material purchase amount - outbound quantity (processing + sales) * average raw material inventory price; Finished product inventory cost = finished product inventory cost for the period + finished product purchase warehousing amount + processing warehousing quantity * average price of raw material inventory - sales outbound quantity * average price of finished product inventory; The total inventory cost for each base is calculated using the following formula: Average inventory price = [SUM (raw material inventory cost) + SUM (finished product inventory cost)] / current base total inventory.

5. The risk inventory management system for scrap steel enterprises according to claim 1, characterized in that: The risk inventory reporting subsystem includes: The reporting submodule is used to report the relevant original business data of each base storage area within the jurisdiction; The encryption submodule is used to encrypt the data entered into the risk inventory reporting subsystem using a hash function, and verify whether the data has been tampered with by comparing the hash value.

6. The risk inventory management system for scrap steel enterprises according to claim 1, characterized in that: The content of the risk inventory publishing subsystem for subsequent review by branches and subsidiaries and the head office includes: the head office queries the data reported by each branch and subsidiary in the risk inventory, and the branch and subsidiary view all the profit and loss data historically released by the company as a basis for further decision-making; when the head office releases the profit and loss data of this batch of risk inventory, the head office queries all the profit and loss data historically released by all branches and subsidiaries in the risk inventory.

7. The risk inventory management system for scrap steel enterprises according to claim 1, characterized in that: Preliminary calculation of risk inventory profit and loss, the calculation formula is as follows: Current profit and loss estimate = [market average price - average price of scrap steel inventory] * total amount of scrap steel inventory of unlocked customers * 1.13; The current profit and loss estimate calculation formula is divided into three cases: Case 1: Current estimated profit and loss >= 0, current estimated profit and loss = current estimated profit and loss; Case 2: Current estimated profit and loss < 0 and mortgage guarantee amount + current estimated profit and loss > = 0, current estimated profit and loss = 0; Case 3: If the current estimated profit and loss situation is less than 0 and the mortgage guarantee amount + the current estimated profit and loss situation is less than 0, the current estimated profit and loss situation = the mortgage guarantee amount + the current estimated profit and loss situation.

8. A method for risk inventory management of a scrap steel enterprise, implemented based on the risk inventory management system of a scrap steel enterprise according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Record the inventory changes and transaction prices of each base warehouse area under its jurisdiction through branches and subsidiaries, and fill in the relevant original business data of each base warehouse area; Step 2: The head office and the branch company lock the login access rights of the risk inventory publishing subsystem by verifying the symmetric key; Step 3: After the branches and subsidiaries are classified by base type and the risk inventory profit and loss are calculated and confirmed to be the same, the head office will review and issue the current risk inventory report; Step 4: The head office searches the risk inventory for the data reported by each branch and subsidiary and the risk inventory profit and loss of each branch and subsidiary; Step 5. Branches and subsidiaries review all profit and loss data published historically by the company to further provide decision-making basis for optimizing inventory.

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