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514 results about "Workstation" patented technology

A workstation is a special computer designed for technical or scientific applications. Intended primarily to be used by one person at a time, they are commonly connected to a local area network and run multi-user operating systems. The term workstation has also been used loosely to refer to everything from a mainframe computer terminal to a PC connected to a network, but the most common form refers to the group of hardware offered by several current and defunct companies such as Sun Microsystems, Silicon Graphics, Apollo Computer, DEC, HP, NeXT and IBM which opened the door for the 3D graphics animation revolution of the late 1990s.

Agile manufacturing system and agile manufacturing method thereof

PendingCN122276413AFlexible manufacturing systemProduction line
This invention provides a flexible manufacturing system and a flexible manufacturing method thereof. The flexible manufacturing system includes an initial feeding platform, a first production line, a second production line, a final discharge platform, and a conveying machine. The first production line includes multiple first workstations and a first conveying mechanism, wherein the initial feeding platform feeds a workpiece onto the first production line, and the first conveying mechanism conveys the workpiece. The second production line includes multiple second workstations and a second conveying mechanism, which conveys the workpiece. The workpiece is moved from the second production line to the final discharge platform for discharge. The conveying machine is adapted to pick up the workpiece from the first or second production line and transport it.
Owner:DELTA ELECTRONICS INC(CN)

Peripheral component interconnect express device and server

This application discloses a peripheral component interconnection fast device and server, relating to the technical field of peripheral component interconnection fast devices. The peripheral component interconnection fast device includes: a peripheral component interconnection fast board, including a board body and a guide member mounted on the board body, the guide member having a guide groove; a hard disk assembly, detachably mounted in the guide groove; the hard disk assembly includes a carrier member, a light guide member, and an adapter card, at least a portion of the carrier member is used to carry the hard disk, the adapter card is disposed on the board body and used to connect to the hard disk, the light guide member is disposed on at least a portion of the carrier member, the end of the light guide member is opposite to the indicator light of the adapter card, and at least a portion of the light guide member extends along the extension direction of the carrier member. This solves the problem in the prior art where users cannot easily know the insertion status in the insertion slot when inserting the hard disk, resulting in low insertion efficiency, and improves the adaptability to compact workstation computers.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD

A multi-station test fixture for radio frequency modules

This utility model discloses a multi-station testing fixture for radio frequency modules, belonging to the field of testing fixture technology. It includes a base with several bolts threaded through it. A mounting shell is fixedly installed on the upper surface of the base, and a motor is fixedly installed inside the mounting shell. A rotating shaft is fixedly installed at the end of the motor's output shaft, and a sliding sleeve is slidably provided on the outer surface of the rotating shaft. By using the motor in conjunction with the rotating shaft, a rotating disk, and multiple workstation plates on the rotating disk, the motor drives the rotating shaft to rotate the rotating disk, thereby realizing the switching and adjustment of multiple workstation plates, thus achieving multi-station testing. After testing one product, only the position needs to be switched, ensuring good testing efficiency. Furthermore, the bidirectional screws on the workstation plates, in conjunction with the workstation clamps, securely clamp the radio frequency module, ensuring that the radio frequency module will not shake or shift during testing, and guaranteeing smooth and accurate testing.
Owner:CHENGDU NEW ZHONGYA MICROWAVE TECHNOLOGY CO LTD

Frame gripping and transfer device

1. Name of the product in this design: Frame gripping and transferring device. 2. Purpose of this design: To transfer sheet metal frames from one workstation to another, thereby completing the transfer of sheet metal frames. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.
Owner:TOPREAL PRECISION MASCH (SUZHOU) CO LTD

A distributed micro-porous jet temperature control system for a factory environment and a control method thereof

This invention relates to the field of factory environmental control technology, and discloses a distributed micro-orifice jet temperature control system and its control method for factory environments. The system includes a central unit, a main air supply duct, branch hoses, workstation-level electromagnetic regulating valves, female quick-connect fittings with leak-proof check valves, and terminal equipment with male quick-connect fittings. The terminal equipment is equipped with a hollow column composed of an outer and inner tube, a telescopic locking mechanism, and low-voltage cables with a helical spring-like extension structure. It also includes an AI controller, an ambient temperature sensor, a body surface temperature sensor, a personnel presence sensor, and a pulse width modulation generator. This invention uses leak-proof check valves to block airflow in vacant workstations to avoid energy loss, utilizes the helical spring-like extension structure to prevent breakage of low-voltage cables, and uses the AI ​​controller to adjust the flow cross-sectional area of ​​the workstation-level electromagnetic regulating valves based on multi-sensor parameters to achieve safe flow interruption and protect personnel at the workstations.
Owner:刘堂云

Synchronous measurement system of internal flow field of compressor based on PIV and pressure sensor

PendingCN122345464ASensor arrayData stream
The application discloses a compressor internal flow field synchronous measurement system based on PIV and pressure sensing, relates to the technical field of compressor experimental aerodynamics measurement, and is suitable for accurate measurement of flow field parameters in a diffuser modeling test of a compressor. The system comprises a dynamic pressure sensor array, a signal conditioning module, a multichannel dynamic pressure acquisition card, a double-pulse laser, a high-speed CMOS camera, an FPGA synchronous controller, a PIV post-processing server and a multi-source data fusion workstation. The FPGA synchronous controller is used as the only time sequence reference of the double-pulse laser, the high-speed CMOS camera and the multichannel dynamic pressure acquisition card, the traditional software trigger is replaced by a hardware trigger, and system delay jitter is eliminated. The timestamp marking pulse and the first pulse trigger signal are output simultaneously, the pressure data stream obtains a sampling point index corresponding to the laser emission moment directly, and the time synchronization accuracy of the velocity field and the pressure field reaches the nanosecond level.
Owner:BEIJING INST OF TECH +1

Workstation and warehousing system

A workstation includes a workstation body, a barrier base, and a monitoring assembly. The barrier base is disposed in the workstation body to divide the workstation body into a traveling area and an operation area, the barrier base is provided with an operation window, and the operation window is located above a tote on a logistics transporting device. The monitoring assembly includes a first detector and a controller, the first detector is disposed on a detection section in the traveling area, and the detection section corresponds to the operation window. The first detector is configured to detect identity information of the logistics transporting device entering the detection section, and the controller is configured to control the logistics transporting device to brake when a speed of the logistics transporting device entering the detection section is greater than or equal to a first preset speed.
Owner:HAI ROBOTICS CO LTD

A filling and sealing integrated machine

PendingCN122276240AProcess engineeringMachine
This invention provides an integrated filling and sealing machine for the field of filling and sealing technology, comprising: a rotating workstation; six sets of jigs evenly spaced at equal angles, used to support aluminum-plastic tubes; a clamping mechanism; a workstation base plate fixed to the frame, on which functional modules that cooperate with each jig are provided; a synchronous loading and unloading mechanism for loading and unloading; and a guide tube for adjusting the height of the upper and lower sliding seats. This invention enables integrated continuous operation, improving production efficiency by integrating multiple processes such as loading and unloading, piercing, sealing, capping, rotary filling, and sealing. Seamless connection between processes is achieved through the intermittent rotation of the rotating workstation, eliminating the need for additional material transfer mechanisms, significantly shortening the processing cycle, improving production efficiency, and enhancing synergy.
Owner:HANGZHOU ZHENHENG PACKAGING MATERIALS CO LTD

Gantry-type polishing machine clamping worktable

The utility model relates to polishing machine workstation technical field, especially relates to a gantry type polishing machine clamping workstation, including work table, work table at least one side is provided with the turnover pressure assembly for the work piece pressure tightly on the work table, the bottom of work table is provided with movement component and a plurality of driven wheels. When using the utility model, the work piece will not slide on the work table, reduces the security risk produced when the work piece polishing, improves the surface quality of work piece polishing, can be applicable to the work piece polishing of lighter weight, thinner thickness, and the work table can polish more products, and the suitability is stronger.
Owner:FOSHAN JI LI JIA MASCH CO LTD

Method, apparatus, device, and medium for ai inference in industrial automation system

Embodiments of the present disclosure disclose a method for AI inference in industrial automation system, comprising: deploying at least one AI model in a centralized AI inference server; receiving, at the centralized AI inference server, sensor data from a plurality of workstations in production lines of the industrial automation system; executing, by AI model in the centralized AI inference server, inference using the received sensor data to generate inference results; sending the inference results to the respective workstations.
Owner:SIEMENS AG +1

A perforating device

ActiveCN224476657UPunchingAnnular cutter
The utility model discloses a perforating device, including base, industrial computer all -in -one, the top one side fixed mounting of base has the rack, and industrial computer all -in -one fixed mounting is in the outer wall of rack, the inboard wall fixed connection of rack has the fixed frame, one end fixed connection of fixed frame has the workstation, the top both sides of workstation all adopt the inclined plane design, the top of workstation is opened and has the bottom hole of penetrating to the bottom. In the utility model, through the rack and double -shaft air cylinder drive assembly seat down pressure, make the rubber roll on two -dimensional elastic piece cooperation inclined plane workstation automatic tensile tight plastic bag, avoid the film wrinkle or deviation when punching, annular cutter and bottom hole accurate alignment ensure that the hole rim is even, and simultaneously the fan can blow the waste into the collecting basket of screw connection, realize efficient punching and automatic cleaning, solve the problem that the traditional device is insufficient and leads to the hole position deviation and waste residue.
Owner:WUXI YISU PACKAGING MATERIALS CO LTD

Fully automatic flow water distribution line device and distribution method

This invention relates to a fully automated conveyor distribution line device and method, belonging to the field of automated production line conveying and distribution technology. The invention provides a fully automated conveyor distribution line device, including a feeding conveyor component, a workstation conveyor component, workstation components, multiple sensors, and a control module. The control module has a built-in shift register, which is configured with physical storage bits corresponding to each sensor, workstation storage bits corresponding to each workstation component, and virtual intermediate storage bits arranged between adjacent physical storage bits. Relying on the shift register, the control module drives product attribute information to be temporarily stored in physical storage bits, then transferred and shifted step-by-step through virtual intermediate storage bits, synchronously flowing with the product conveying process and matching its position in real time. This eliminates information misalignment, resists human interference, adaptively adjusts the conveying cycle time, avoids material accumulation, and allows for the storage and traceability of processing information, significantly improving distribution accuracy and the level of production line automation.
Owner:GUANGDONG KOSSI INTELLIGENT TECH CO LTD

Machine tool and base structure thereof

The utility model discloses a machine tool and base structure thereof, including first support part, second support part and the workstation part of connecting between first support part and second support part, first support part, second support part and workstation part are connected and form integrated structure, and first support part and second support part are respectively relative to the workstation part and are set to the outward inclination to each other, and are used for supporting gantry of machine tool, the upward surface of the connecting place between first support part and second support part and workstation part is provided with recess respectively, and first support part and / or second support part are respectively provided with a plurality of chip removal channels that are through its inner and outer surfaces, and the chip removal channel is communicated with the recess corresponding to it, so can set the base and workstation of machine tool as integrated structure, and is favorable to chip removal when workpiece processes.
Owner:XIAMEN JANSSEN CNC EQUIPMENT CO LTD

Electronic device (2) with dynamic graphical user interface with station alarm

1. Name of the product in this design: Electronic device with dynamic graphical user interface for workstation alarm (2). 2. Purpose of this design: An electronic device. 3. The key design feature of this product is its graphical user interface. 4. The image or photo that best illustrates the design points: Design 1 Interface Change State Diagram 1. 5. Designate basic design: Design 1 is the basic design for similar appearance designs in this case. 6. Purpose of the graphical user interface: for controlling workstation alarm lights. 7. Human-computer interaction method of graphical user interface: Click the button options in the main view interface to perform operations. 8. Description of the changing states of the graphical user interface: Design 1 main view is the main interface view; clicking any of the options "01-08" in the Design 1 main view interface will enter the Design 1 interface changing state diagram 1; clicking the "Production Start" option in the Design 1 interface changing state diagram 1 will enter the Design 1 interface changing state diagram 2, and then the Design 1 interface changing state diagram 2 will automatically change to the Design 1 interface changing state diagram 3; clicking the "Return to Previous Page" option in the Design 1 interface changing state diagram 3 will enter the Design 1 interface changing state diagram 4. Design 2 main view is the main interface view; click any of the options "01-08" in the Design 2 main view interface to enter Design 2 interface change state diagram 1; click the "Fire Alarm" option in Design 2 interface change state diagram 1 to enter Design 2 interface change state diagram 2, then Design 2 interface change state diagram 2 automatically changes to Design 2 interface change state diagram 3; click the "Return to Previous Page" option in Design 2 interface change state diagram 3 to enter Design 2 interface change state diagram 4. Design 3 main view is the main interface view; click any of the options "01-08" in the Design 3 main view interface to enter Design 3 interface change state diagram 1; click the "Working Abnormality" option in Design 3 interface change state diagram 1 to enter Design 3 interface change state diagram 2, and then Design 3 interface change state diagram 2 will automatically change to Design 3 interface change state diagram 3; click the "Return to Previous Page" option in Design 3 interface change state diagram 3 to enter Design 3 interface change state diagram 4. 9. Other notes: X in the view represents replaceable content.
Owner:SHENZHEN ZHONGFUNENG ELECTRIC EQUIPMENT CO LTD

A full servo high-speed slot punching machine with tangential linear inclined slot punching structure

ActiveCN224463521UInterior spacePunch press
The utility model discloses a full servo high -speed punch groove machine with tangential straight line chute punch -stamping structure, including punch press bottom plate, index seat and tablet seat, inside one end of punch press bottom plate is installed with bearing seat, and one end of bearing seat is installed with first servo motor, the output shaft of first servo motor is connected with ball screw drive, and ball screw is installed inside punch press bottom plate, the utility model discloses, when processing, drive ball screw to rotate through first servo motor, cooperate nut seat to drive index seat whole left and right translation, synchronously drive fixed silicon steel sheet on index shaft to translate, and then adjust the punch groove position of silicon steel sheet, and this design makes full use of the inside space of index seat and punch press bottom plate, does not need to adjust the thickness of workstation board, gives the maximum spacing between workstation board and punch head, and is convenient for mould replacement and robot silicon steel sheet taking and placing, and the workstation board of fixed installation helps to improve the punch groove precision.
Owner:ANHUI SICHUANG INTELLIGENT EQUIP CO LTD

Reversible rotating stand

The invention relates to a mechanical workstation device (1) configured to allow alternation between a first configuration and a second configuration, the device (1) comprising a support (10) having a first group of electronic components fixed on its first main face, the support being suitable for mounting on a support frame (15), a rotation mechanism (13) configured to drive the support (10) in rotation about a main axis (X13) relative to the support frame (15), the device (1) comprising, fixed on its second main face (102), substantially parallel to its first main face, a second group of electronic components (12), such that the rotation of the support (10) about the main axis (X13) allows selective access to one or the other group of electronic components.
Owner:Y247 GROUP

Economical dragon-shaped rocking arm screen printing machine

The utility model discloses an economic type dragon-shaped swing arm silk screen printing machine, including the frame, be provided with the reception body subassembly on the frame, the reception body subassembly includes the wing plate spare, the wing plate spare lower part rotation is provided with the steering adjustment spare of fixed setting on the frame, the utility model low -cost dragon -shaped swing arm silk screen printing machine has realized the good versatility of large and small area printing, and the flexible extension of multiple specifications and models is convenient, and can realize the extension of multiple specifications and models under the prerequisite of not changing the main body structure with low cost, its feeding and discharging efficiency is higher, can satisfy the demand of larger printing area simultaneously, and effectively reduces the equipment manufacturing cost and has promoted the safety performance, simultaneously, the design has created the safe foundation and simple condition for application, makes the machine operation simple and convenient, is helpful to the enterprise to solve the silk screen printing operator workstation labor difficult and the recruitment difficult problem, improves the practicability and economy of equipment as a whole, effectively solved the problem of poor versatility of existing swing arm type silk screen printing machine.
Owner:DONGGUAN LE MA GAO PRINTING MASCH CO LTD

A high-precision plug-in and plug-out durability test device

ActiveCN224499922UPrecise sliding directionavoid misalignmentTest efficiencyCoupling
The utility model discloses a kind of high-precision plug-in durability test equipment, belong to quick coupling detection technical field, including test box, the inside fixed connection of test box has workstation, the top fixed connection of workstation has the bottom plate of upper and lower parallel distribution, and fixedly connected with precision guide rod between bottom plate;The utility model, the setting of precision guide rod ensures that the sliding direction of push plate is accurate, prevents push plate deviation and causes plug alignment deviation;Female plug and female plug base thread connection, male plug and male head base bolt fixing mode, both facilitate staff to dismantle replacement female plug and male plug at any time, adapt to the test demand of different model plug, improve equipment versatility;Driving unit drives push plate to complete plug-in action automatically, replace manual operation, not only improve test efficiency, also avoid the error of manual operation, ensure the consistency of test result.
Owner:SUZHOU MEIXIN TESTING TECH CO LTD

A die stamping waste self-separation and collection mechanism

ActiveCN224463594UWorkstationStamping process
The utility model relates to mould technical field, and disclose a kind of mould stamping waste material self-separation and collection mechanism, including base, fixedly installed workstation in base upper portion, fixedly installed mounting bracket in base upper portion, place the collecting box in base upper portion, fixedly installed electric telescopic handle in mounting bracket top, fixedly installed mounting plate in electric telescopic handle output end, and set in the connecting assembly of base upper portion, the connecting assembly includes setting in the fixed mechanism of base upper portion, the separation mechanism is set in base upper portion, two-way threaded rod is rotatably connected with workstation by bearing, mounting block is threadedly connected in the outer wall of two-way threaded rod, the connecting block upper portion is fixedly connected with guide plate, first spring one end is fixedly connected with slider.
Owner:NANTONG DONGBO PRECISION MASCH CO LTD

Composite robot workstation

1. The name of the design product: composite robot workstation. 2. The use of the design product: the design product is used for visual identification, grabbing, carrying and arranging of parts. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.
Owner:SHANGHAI SAGE INTELLIGENT TECH CO LTD

A kind of pangolin type robot for coal bunker unblocking and method

ActiveCN121245827BControl engineeringBunker
This invention provides a pangolin-shaped robot and method for clearing blockages in coal bunkers, including a bionic head device, a bionic neck device, a bionic body device, a locking device, and a multimodal perception system. Through a rigid-flexible collaborative structural design, the robot can efficiently overcome obstacles and operate flexibly within the confined space of a coal bunker. The integrated multimodal perception system can accurately identify the type of blockage and optimize path planning. Combined with a wiring harness and rope connection to an external workstation, it ensures continuous and safe operation even in extreme environments. The axial tunneling module of the bionic head device works in conjunction with the slag discharge guiding mechanism, significantly improving clearing efficiency; the spiral coal crushing device of the bionic body device adopts a quick-release design, simplifying the maintenance process. Overall, it achieves intelligent, efficient, and low-cost reliable clearing of coal bunker blockages, significantly improving the efficiency and safety of coal bunker clearing.
Owner:SHANDONG HAIDA ROBOT TECH CO LTD +2

A multi-model stamping integrated workstation collaborative control system

The application relates to the technical field of punch control, and discloses a multi-model punch integrated workstation cooperative control system, which comprises a central control module, a raw material input module, a punch processing execution module, a die support and management module, a finished product and waste treatment module and a material handling and coordination module are connected to the central control module; the raw material input module and the punch processing execution module are electrically connected; the punch processing execution module is used for binding a die, a product and optimal punch process parameters; after a die changing instruction is triggered, the system automatically calls a complete set of process formula and sends the formula to equipment, the die and the program are automatically changed, the die changing speed of the die support and management module is combined, the time required by a traditional time-consuming hours of production change process is compressed, and the workstation can efficiently cope with multi-variety and small-batch production requirements.
Owner:SKYCONN TECH (JIANGSU) CO LTD

Numerical control machine tool for metal fittings with scrap cleaning function

The utility model discloses a numerical control machine tool with metal fittings is removed to the function of scrap, relates to numerical control machine tool technical field, the utility model discloses a base, and the both ends of base are connected with the mobile seat, and the first connecting beam is connected between two mobile seats, processing subassembly is set up on the first connecting beam, and the outside of processing subassembly is installed annular cleaning cover, and the lateral wall of annular cleaning cover is equipped with a plurality of annular equidistance distribution's second nozzle, workstation is set up at the top center of base, and the top of workstation is equipped with the scrap cleaning subassembly, the utility model discloses through setting up scrap cleaning subassembly, and the accurate movement is realized to second connecting beam through the screw rod drive, and the first nozzle drives the coverage workstation whole domain, and the oblique airflow cooperation second baffle forms the combination of " directional blowing + prevent splashing", and the scrap is concentrated to the scrap inlet, compared with traditional fixed scraper, and the scrap of hidden position such as the gap of workbench, corner etc. can be cleaned.
Owner:QINGDAO JIAEN MASCH TECH CO LTD

A transport equipment automated production line

The application discloses a kind of transport equipment automated production line, comprising: assembly workstation, the quantity of the assembly workstation is several and is evenly distributed in same side along production line path;Intelligent warehousing unit, the intelligent warehousing unit is located in the feeding end of the assembly workstation side, for providing material for the assembly workstation;Intelligent detection unit is located at the end of production line, the discharge end of the intelligent detection unit is equipped with unqualified product outlet and qualified product outlet, central control system, the central control system includes demand analysis module, path planning module, interlock control module, monitoring and early warning module and data traceability module in, it is related to the field of automated equipment manufacturing technology, flexible production capacity significantly improves: by modular assembly station and logic control architecture, the quick switching production of more than a variety of above type transport equipment is realized, production line adjustment cycle shortens, equipment utilization improves.
Owner:洛阳市交通运输综合行政执法支队

Method and system for controlling a production line

The embodiment of the present application provides a production line control method and system. The control method comprises the following steps: determining the process number and the work order quantity of each process of a product to be produced; generating a work order task of each process according to the process number and the work order quantity, wherein the work order task comprises a work order number and the process number; sending each work order task of each process to a workstation client of a corresponding process area; when each process is executed, starting the work order task through the workstation client of the current process, calling corresponding process parameters based on the process number and configuring the process parameters into the workstation equipment of the corresponding workstation, and generating a work order task record of the corresponding work order number after each work order task is completed. The embodiment of the present application can automatically configure process parameters of equipment and record production process data in real time, thereby guaranteeing product quality and traceability of the production process.
Owner:SIEMENS FACTORY AUTOMATION ENG

Multi-station CD grooving machine

ActiveCN224406448USolve the problem of processing differencesavoid wasting timeProcess engineeringMachine
The utility model provides a kind of multi-station CD thread lathe machine, belong to machining technical field, this multi-station CD thread lathe machine includes rack, workstation and tool moving module, the workstation is set on the rack, the tool moving module is set on the workstation, tool moving module is installed with lathe tool assembly on;At least two groups of rotating module for fixing workpiece jig are provided on the workstation, all the rotating module is synchronously rotated by transmission mechanism simultaneously.The utility model is driven by all rotating module synchronous rotation by setting at least two groups of rotating module, and using same driving element, the same speed synchronous rotation of multi-station workpiece is realized, effectively solve the same batch workpiece processing difference problem caused by station independent operation of existing double-station equipment, improve the consistency and stability of product in batch production, and then improve product yield.
Owner:JIANHUI (XIAN) MACHINE TOOL CO LTD

Variable angle workstation and multi-station press platform

The utility model discloses a variable angle workstation and multi -position stamping platform, including station frame, the station frame includes rotary work platform and sets up in the rotary work platform and is used for fixing the support limiting component of part, still include drive mechanism, drive mechanism includes the mounting panel, the rotary work platform one side of station frame is rotated and is installed on the mounting panel, the other side of rotary work platform is equipped with the drive assembly and drives its rotation. The utility model station frame can adjust its required angle through drive mechanism, to adapt to the processing angle required by the part to be processed installed on the station frame, solved the problem that station frame can not adjust angle in the prior art, replaced the mode of adjusting part through universal wheel and clamping hand cooperation in the prior art, and relative to prior art has the advantages, such as low cost, good durability, simple structure.
Owner:LIAN WEI AUTO PARTS CHONQGING

Intelligent Pitot and Nanoscale Pipetting Workstation (RD-ABP100)

ActiveCN310064450SMedicineEngineering
1. Name of the product in this design: Intelligent Pitot and Nanoscale Pipetting Workstation (RD-ABP100). 2. Application of this design: This design is used for the transfer of liquids at the PL and NL levels. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.
Owner:SHANGHAI RUIDU OPTOELECTRONICS TECH CO LTD