Soft pack seat for preventing temperature rise under buttocks

CN113995254BActive Publication Date: 2026-08-21HUZHOU XIRUI FURNITURE MFG CO LTD
View PDF 4 Cites 0 Cited by

Patent Information

Application Number
CN202111530454.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-12-14
Publication Date
2026-08-21
Estimated Expiration
2041-12-14

AI Technical Summary

Technical Problem

[0003]但是目前市面上出现的大多数软包体座椅,人们在天气较热时坐上去座椅温度容易升高,则人们容易出汗,影响人们对座椅的使用,同时也影响人们的舒适度,而且座椅的高度不易调节,不能同时适用于不同的人群,同时也比较影响舒适度

Benefits of technology

[0015] 1. This soft-padded seat that prevents the temperature under the buttocks from rising can be equipped with a heat dissipation mechanism. When heat dissipation is needed, the soft padded body can be opened and ice packs can be placed inside the placement box to dissipate heat from the buttocks. The soft padded body and the placement box are easy to open. After the ice packs placed inside the placement box melt, the box lid can be opened to replace the ice packs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN113995254B_ABST
    Figure CN113995254B_ABST
Patent Text Reader

Abstract

The application relates to the field of life technology, and discloses a soft package body seat capable of preventing temperature rise under the hips, which comprises a soft package body backrest, the bottom of the soft package body backrest is fixedly connected with chair legs. The soft package body seat capable of preventing temperature rise under the hips can place some ice bags in the placing box by opening the soft package body when heat dissipation is needed, thereby achieving heat dissipation on the hips of people, the soft package body and the placing box are convenient to open, the ice bags in the placing box can be replaced after the ice bags are thawed, the seat can be automatically lifted along the T-shaped groove one through the extension and contraction of the second telescopic rod, the structure is simple, the needs of different people are met, the use experience of people is good, the moving mechanism is arranged, when moving is needed, the universal wheel can be placed down, thereby moving the whole seat, when moving is not needed, the universal wheel is pulled up to limit, and the stability of the whole seat is maintained.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of living technology, specifically to a soft-pack seat that prevents the temperature under the buttocks from rising. Background Technology

[0002] A chair is a type of seating furniture with a backrest, and sometimes armrests. In ancient times, people sat on the floor, and there were no chairs; the word "chair" originally referred to a type of wood. Chairs are classified according to their use: child safety seats, airport seats, car seats, bus seats, family seats, restaurant seats, and leisure seats, etc. They are also classified by material: aluminum alloy seats, stainless steel seats, iron seats, wooden seats, and seats made of other materials. With market competition and social development, the industry has evolved, and chairs have reached an artistic level. Various artistic chair designs have emerged, such as egg-shaped chairs, red-lipped chairs, and various massage chairs. The Book of Songs mentions "its paulownia, its chair," where "chair" refers to "catalpa," a type of tree. According to historical records, the name "chair" first appeared in the Tang Dynasty, while the image of a chair can be traced back to the "Hu bed" introduced to the north during the Han and Wei dynasties. Although the seating at that time already possessed the shape of chairs and stools, because there were no terms for chairs or stools at the time, people still habitually called it a "Hu bed." In temples, it was often used for meditation, hence the name "meditation bed." After the Tang Dynasty, the use of chairs gradually increased, and the name "chair" became widely used, thus separating it from the category of beds.

[0003] However, most of the soft-pack chairs currently on the market tend to heat up when people sit on them in hot weather, causing them to sweat and affecting their use and comfort. In addition, the height of the chairs is not easily adjustable, making them unsuitable for different people and also affecting comfort. Summary of the Invention

[0004] The purpose of this invention is to provide a soft-pack seat that prevents the temperature under the buttocks from rising, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a soft-pack seat to prevent the temperature under the buttocks from rising, comprising a soft-pack backrest, a chair leg fixedly connected to the bottom of the soft-pack backrest, a base fixedly connected to the right side of the chair leg, a moving mechanism fixedly connected inside the base, a lifting mechanism fixedly connected to the top of the base, a soft-pack seat fixedly connected to the top of the lifting mechanism, and a heat dissipation mechanism fixedly connected inside the soft-pack seat.

[0006] The heat dissipation mechanism includes a pin, which is fixedly connected to the top of the upholstered seat. The right side of the pin is fixedly connected to the upholstered body, and the left side of the upholstered body is fixedly connected to a connecting block. The bottom of the upholstered seat has a groove, and the bottom of the groove is fixedly connected to a telescopic rod. The bottom of the telescopic rod is fixedly connected to an L-shaped block. The bottom of the connecting block has a slot, and the L-shaped block is engaged with the bottom of the connecting block through the slot. The bottom of the upholstered seat is fixedly connected to a base plate.

[0007] Preferably, a storage box is fixedly connected inside the soft-pack seat. A pin two is fixedly connected to the left side of the storage box, and a box cover one is rotatably connected to the right side of the pin two. A rotating rod one is fixedly connected to the top of the box cover one, and a movable rod one is rotatably connected to the right side of the rotating rod one. A pin three is fixedly connected to the right side of the storage box, and a box cover two is rotatably connected to the left side of the pin three. A rotating rod two is fixedly connected to the top of the box cover two, and a movable block two is rotatably connected to the left side of the rotating rod two. When it is necessary to open the soft-pack seat, the telescopic rod one can be extended, and the L-shaped block can be separated from the bottom of the connecting block. The soft-pack seat can then be opened by rotating the pin one. Then, the box cover one and box cover two can be opened by releasing the latch, so that an ice pack can be placed inside the storage box. The box cover one, box cover two, and the bottom plate are all made of heat-dissipating material.

[0008] Preferably, a spring is fixedly connected to the left side of the movable block 2, and a plug rod is fixedly connected to the left side of the spring 1. A fixing block is fixedly connected to the top of the box cover 2. The fixing block has a hole in the middle, and the plug rod is inserted into the inside of the fixing block through the hole. Under normal conditions, the locking rod can be stably inserted into the inside of the fixing block to maintain structural stability. By compressing the spring 1, the locking rod can be moved out of the inside of the fixing block. Thus, when the movable rod 1 is rotated by the rotating rod 1, the box cover 1 and the box cover 2 can be opened by the pins 2 and 3.

[0009] Preferably, the lifting mechanism includes a T-shaped groove, a T-shaped block slidably connected to the right side of the T-shaped groove, the T-shaped block slidably connected to the left side of the upholstered seat, a T-shaped groove 2 is provided on the top of the base, a T-shaped block 2 is slidably connected to the top of the T-shaped groove 2, and a telescopic rod 2 is fixedly connected to the left side of the T-shaped groove 2. The upholstered seat can drive the T-shaped block 1 to move up and down along the T-shaped groove 1, and the telescopic rod 2 can push the T-shaped block 2 to slide left and right along the T-shaped groove 2.

[0010] Preferably, the telescopic rod two is fixedly connected to the left side of the T-shaped block two, the top of the T-shaped block two is fixedly connected to the rotating rod three, the top of the rotating rod three is rotatably connected to the movable plate, the top of the movable plate is rotatably connected to the rotating rod four, and the rotating rod four is fixedly connected to the bottom of the upholstered seat. When the telescopic rod two extends or retracts, it can drive the T-shaped block two to slide left and right along the T-shaped groove two, thereby causing the movable plate to rotate. Thus, the rotating rod four pushes the upholstered seat up and down along the T-shaped groove one, thereby automatically adjusting the height.

[0011] Preferably, the moving mechanism includes a T-shaped groove three, which is formed inside the base. A T-shaped block three is slidably connected to the inner side of the T-shaped groove three, and a universal wheel is fixedly connected to the inner side of the T-shaped block three. A pull rod is fixedly connected to the top of the universal wheel, and a locking rod is fixedly connected to the top of the pull rod. By pulling the pull rod, the universal wheel can move up and down along the T-shaped groove three with the T-shaped block three, thereby folding up and down the universal wheel. When folded down, it facilitates the movement of the entire seat, and when folded up, it ensures the stability of the entire seat and does not affect people's use.

[0012] Preferably, a footrest is fixedly connected to the top of the base, and a second groove is provided on the left side of the footrest. A second spring is fixedly connected to the left side of the second groove, and a fixing rod is fixedly connected to the left side of the second spring. The design of two holes inside the rod limits the position of the caster wheel, and the locking rod prevents the caster wheel from falling off along the through hole.

[0013] Preferably, the base has a hole in the middle, and the pull rod is inserted into the base through the hole. The pull rod also has a hole in the middle, and the fixing rod is inserted into the pull rod through the hole, which maintains a stable connection and facilitates the release of the limit.

[0014] Compared with the prior art, the present invention provides a soft-pack seat that prevents the temperature under the buttocks from rising, and has the following beneficial effects:

[0015] 1. This soft-padded seat that prevents the temperature under the buttocks from rising can be equipped with a heat dissipation mechanism. When heat dissipation is needed, the soft padded body can be opened and ice packs can be placed inside the placement box to dissipate heat from the buttocks. The soft padded body and the placement box are easy to open. After the ice packs placed inside the placement box melt, the box lid can be opened to replace the ice packs.

[0016] 2. This soft-pack seat, designed to prevent the temperature under the buttocks from rising, features a lifting mechanism that allows the seat to automatically rise and fall along the T-shaped groove via the extension and retraction of the telescopic rod. Its simple structure caters to the needs of different users and ensures a comfortable user experience.

[0017] 3. This soft-pack seat, designed to prevent overheating of the buttocks, features a movable mechanism that allows the casters to be lowered when needed for movement, and pulled up to maintain stability when not in use, making it convenient for users. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0019] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a front view of the structure of the present invention;

[0021] Figure 3 This is a frontal cross-sectional view of the structure of the present invention;

[0022] Figure 4 This is a frontal cross-sectional view of the heat dissipation mechanism of the present invention;

[0023] Figure 5 for Figure 3 Enlarged structural diagram at point A in the middle;

[0024] Figure 6 This is a top cross-sectional view of the T-shaped groove and T-shaped block of the present invention.

[0025] In the diagram: 1. Upholstered backrest; 2. Upholstered seat; 3. Heat dissipation mechanism; 31. Storage box; 32. Pin 2; 33. Pin 1; 34. Box lid 1; 341. Rotating rod 1; 342. Upholstered body; 343. Fixing block; 344. Spring 1; 345. Rotating rod 2; 346. Base plate; 35. Connecting block; 36. Pin 3; 37. Groove 1; 371. Telescopic rod 1; 372. L-shaped block; 373. Movable block 2; 38. Box lid 2; 381. Insert rod 382. Movable rod one; 4. Moving mechanism; 41. Footrest; 411. Groove two; 42. Spring two; 43. Casters; 44. T-block three; 45. T-slot three; 46. Fixed rod; 47. Pull rod; 48. Locking rod; 5. Base; 6. Lifting mechanism; 61. Rotating rod four; 62. Telescopic rod two; 63. Movable plate; 64. T-slot two; 65. Rotating rod three; 66. T-block two; 67. T-slot one; 68. T-block one; 7. Chair legs. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Please see Figure 1-6 The present invention provides a technical solution: a soft-pack seat to prevent the temperature under the buttocks from rising, including a soft-pack backrest 1, a chair leg 7 fixedly connected to the bottom of the soft-pack backrest 1, a base 5 fixedly connected to the right side of the chair leg 7, a moving mechanism 4 fixedly connected inside the base 5, a lifting mechanism 6 fixedly connected to the top of the base 5, a soft-pack seat 2 fixedly connected to the top of the lifting mechanism 6, and a heat dissipation mechanism 3 fixedly connected inside the soft-pack seat 2.

[0029] The heat dissipation mechanism 3 includes a pin 33, which is fixedly connected to the top of the upholstered seat 2. A soft upholstery 342 is fixedly connected to the right side of the pin 33, and a connecting block 35 is fixedly connected to the left side of the soft upholstery 342. A groove 37 is provided at the bottom of the upholstered seat 2, and a telescopic rod 371 is fixedly connected to the bottom of the groove 37. An L-shaped block 372 is fixedly connected to the bottom of the telescopic rod 371. The connecting block 35 has a slot at its bottom, and the L-shaped block 372 is engaged with the bottom of the connecting block 35 through the slot. A base plate 3 is fixedly connected to the bottom of the upholstered seat 2. 46. ​​A placement box 31 is fixedly connected inside the soft-pack seat 2. Pin 2 32 is fixedly connected to the left side of the placement box 31. A cover 1 34 is rotatably connected to the right side of pin 2 32. A rotating rod 1 341 is fixedly connected to the top of the cover 1 34. A movable rod 1 382 is rotatably connected to the right side of the rotating rod 1 341. Pin 3 36 is fixedly connected to the right side of the placement box 31. A cover 2 38 is rotatably connected to the left side of pin 3 36. A rotating rod 2 345 is fixedly connected to the top of the cover 2 38. A movable block is rotatably connected to the left side of the rotating rod 2 345. When it is necessary to open the soft package 342, the telescopic rod 371 can be extended, allowing the L-shaped block 372 to disengage from the bottom of the connecting block 35. The soft package 342 can then be opened by rotating the pin 33. Afterwards, the first and second lids 34 and 38 can be opened by releasing the latch, allowing ice packs to be placed inside the box 31. The first lid 34, second lid 38, and bottom plate 346 are all made of heat-dissipating material. A spring 344 is fixedly connected to the left side of the movable block 373, and a rod 38 is fixedly connected to the left side of the spring 344. 1. The top of the second cover 38 is fixedly connected to a fixing block 343. The fixing block 343 has a hole in the middle. The insertion rod 381 is inserted into the inside of the fixing block 343 through the hole. Under normal conditions, the insertion rod 381 can be stably inserted into the inside of the fixing block 343, maintaining a stable and locked structure. The compression spring 344 can make the insertion rod 381 leave the inside of the fixing block 343. Thus, when the rotating rod 341 rotates the movable rod 382, ​​the second cover 34 and the second cover 38 can be opened through the pin 32 and the third pin 36.

[0030] The lifting mechanism 6 includes a T-shaped groove 67, a T-shaped block 68 slidably connected to the right side of the T-shaped groove 67, and a T-shaped block 68 fixedly connected to the left side of the upholstered seat 2. A T-shaped groove 64 is formed at the top of the base 5, and a T-shaped block 66 is slidably connected to the top of the T-shaped groove 64. A telescopic rod 62 is fixedly connected to the left side of the T-shaped groove 64. The upholstered seat 2 can move the T-shaped block 68 up and down along the T-shaped groove 67, and the telescopic rod 62 can push the T-shaped block 66 to slide left and right along the T-shaped groove 64. The telescopic rod 62 is fixedly connected to the left side of T-shaped block 2 66. A rotating rod 3 65 is fixedly connected to the top of T-shaped block 2 66. A movable plate 63 is rotatably connected to the top of the rotating rod 3 65. A rotating rod 4 61 is rotatably connected to the top of the movable plate 63. The rotating rod 4 61 is fixedly connected to the bottom of the soft-pack seat 2. When the telescopic rod 2 extends or retracts, it can drive T-shaped block 2 66 to slide left and right along T-shaped groove 2 64, thereby causing the movable plate 63 to rotate. Thus, the rotating rod 4 61 pushes the soft-pack seat 2 up and down along T-shaped groove 1 67, thereby automatically adjusting the height.

[0031] The moving mechanism 4 includes a T-shaped groove 45, which is located inside the base 5. A T-shaped block 44 is slidably connected to the inner side of the T-shaped groove 45. A caster wheel 43 is fixedly connected to the inner side of the T-shaped block 44. A pull rod 47 is fixedly connected to the top of the caster wheel 43, and a locking rod 48 is fixedly connected to the top of the pull rod 47. By pulling the pull rod 47, the caster wheel 43 can move up and down along the T-shaped block 44 along the T-shaped groove 45, thereby raising and lowering the caster wheel 43. When lowered, it facilitates the movement of the entire seat, and when raised, it ensures the stability of the entire seat and does not affect the use of the seat. The base 5 has a footrest 41 fixedly connected to the top. The footrest 41 has a groove 411 on the left side. A spring 42 is fixedly connected to the left side of the groove 411. A fixing rod 46 is fixedly connected to the left side of the spring 42. The design of two holes inside the pull rod 47 limits the position of the universal wheel 43, and the locking rod 48 prevents the universal wheel 43 from falling off along the through hole. The base 5 has a hole in the middle, through which the pull rod 47 is inserted into the base 5. The fixing rod 46 is inserted into the pull rod 47 through the hole, maintaining a stable connection and facilitating the release of the limit.

[0032] In actual operation, when this device is in use and ice packs are needed for heat dissipation, first extend the telescopic rod 371, causing the L-shaped block 372 to move away from the bottom of the connecting block 35. Then, the soft package 342 can be opened by the pin 33, thereby compressing the spring 344 of the insert rod 381 and causing the insert rod 381 to move away from the inside of the fixed block 343. By rotating the rod 341, the movable rod 382 is rotated, causing the fixed block 343 to move away from the inside of the movable rod 382. The box cover 34 and the box cover 38 are opened by the pins 32 and 36, and the ice pack is placed inside the placement box 31. Then, the box cover 34 and the box cover 38 are closed, so that the structure returns to its original position and locks in place. The soft package 342 is rotated back to its original position and the telescopic rod 371 is retracted again.

[0033] When it is necessary to adjust the up and down position of the upholstered seat 2, the telescopic rod 2 62 is extended or retracted, which causes the T-shaped block 2 66 to slide left and right at the top of the T-shaped groove 2 64. The movable plate 63 rotates along the rotating rod 4 61 and the rotating rod 3 65, causing the upholstered seat 2 to move up and down along the T-shaped block 1 68 along the T-shaped groove 1 67, thereby automatically adjusting the up and down position of the upholstered seat 2.

[0034] When the entire seat needs to be moved, pull the lever 48, and the fixing rod 46 compresses the spring 42 to move the fixing rod 46 out of the pull rod 47. This allows the caster wheel 43 to move downwards along the T-slot 45 with the T-block 44. When it reaches the appropriate position, release the spring 42, and the fixing rod 46 will insert into the hole above the pull rod 47 to maintain stability. Repeat this operation on the left side of the base 5, and the symmetrical casters on both sides can be lowered for movement. When movement is no longer needed, pull the pull rod 47 up to allow the fixing rod 46 to re-insert into the hole below.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A soft-padded seat for preventing temperature rise under the buttocks, comprising a soft-padded backrest (1), characterized in that: The bottom of the soft-pack backrest (1) is fixedly connected to a chair leg (7), the right side of the chair leg (7) is fixedly connected to a base (5), the base (5) is fixedly connected to a moving mechanism (4), the top of the base (5) is fixedly connected to a lifting mechanism (6), the top of the lifting mechanism (6) is fixedly connected to a soft-pack seat (2), and the soft-pack seat (2) is fixedly connected to a heat dissipation mechanism (3). The heat dissipation mechanism (3) includes a pin (33), which is fixedly connected to the top of the soft-pack seat (2). A soft-pack body (342) is fixedly connected to the right side of the pin (33), and a connecting block (35) is fixedly connected to the left side of the soft-pack body (342). A groove (37) is provided at the bottom of the soft-pack seat (2). A telescopic rod (371) is fixedly connected to the bottom of the groove (37). An L-shaped block (372) is fixedly connected to the bottom of the telescopic rod (371). A slot is opened at the bottom of the connecting block (35), and the L-shaped block (372) is engaged with the bottom of the connecting block (35) through the slot. A base plate (346) is fixedly connected to the bottom of the soft-pack seat (2). The soft-pack seat (2) is fixedly connected to a placement box (31). The left side of the placement box (31) is fixedly connected to a pin two (32). The right side of the pin two (32) is rotatably connected to a box cover one (34). The top of the box cover one (34) is fixedly connected to a rotating rod one (341). The right side of the rotating rod one (341) is rotatably connected to a movable rod one (382). The right side of the placement box (31) is fixedly connected to a pin three (36). The left side of the pin three (36) is rotatably connected to a box cover two (38). The top of the box cover two (38) is fixedly connected to a rotating rod two (345). The left side of the rotating rod two (345) is rotatably connected to a movable block two (373). The movable block 2 (373) is fixedly connected to the left side of the spring 1 (344), and the spring 1 (344) is fixedly connected to the left side of the insert rod (381). The top of the box cover 2 (38) is fixedly connected to the fixing block (343), and the fixing block (343) has a hole in the middle. The insert rod (381) is inserted into the fixing block (343) through the hole.

2. A soft-pack seat for preventing temperature rise under the buttocks according to claim 1, characterized in that: The lifting mechanism (6) includes a T-shaped groove (67), a T-shaped block (68) is slidably connected to the right side of the T-shaped groove (67), the T-shaped block (68) is fixedly connected to the left side of the soft-pack seat (2), a T-shaped groove (64) is opened on the top of the base (5), a T-shaped block (66) is slidably connected to the top of the T-shaped groove (64), and a telescopic rod (62) is fixedly connected to the left side of the T-shaped groove (64).

3. A soft-pack seat for preventing temperature rise under the buttocks according to claim 2, characterized in that: The telescopic rod 2 (62) is fixedly connected to the left side of the T-shaped block 2 (66). The top of the T-shaped block 2 (66) is fixedly connected to the rotating rod 3 (65). The top of the rotating rod 3 (65) is rotatably connected to the movable plate (63). The top of the movable plate (63) is rotatably connected to the rotating rod 4 (61). The rotating rod 4 (61) is fixedly connected to the bottom of the soft-pack seat (2).

4. A soft-pack seat for preventing temperature rise under the buttocks according to claim 1, characterized in that: The moving mechanism (4) includes a T-shaped groove (45), which is located inside the base (5). A T-shaped block (44) is slidably connected to the inside of the T-shaped groove (45). A caster wheel (43) is fixedly connected to the inside of the T-shaped block (44). A pull rod (47) is fixedly connected to the top of the caster wheel (43). A locking rod (48) is fixedly connected to the top of the pull rod (47).

5. A soft-pack seat for preventing temperature rise under the buttocks according to claim 4, characterized in that: The base (5) is fixedly connected to the top of the footrest (41), and the footrest (41) has a groove (411) on the left side. The groove (411) has a spring (42) fixedly connected to the left side, and the spring (42) has a fixing rod (46) fixedly connected to the left side.

6. A soft-pack seat for preventing temperature rise under the buttocks according to claim 4, characterized in that: The base (5) has a hole in the middle, and the pull rod (47) is inserted into the base (5) through the hole. The pull rod (47) has a hole in the middle, and the fixing rod (46) is inserted into the pull rod (47) through the hole.

Citation Information

Patent Citations

  • Multi-function chair

    CN102228350A

  • Combined metering detector

    CN109141497A

  • Dual-purpose seat for adults and children

    CN212345933U

  • Rare earth tailing area soil remediation ecological net

    CN212792392U