CN108297050B - Portable hardware and tools case - Google Patents

Portable hardware and tools case Download PDF

Info

Publication number
CN108297050B
CN108297050B CN201810121718.4A CN201810121718A CN108297050B CN 108297050 B CN108297050 B CN 108297050B CN 201810121718 A CN201810121718 A CN 201810121718A CN 108297050 B CN108297050 B CN 108297050B
Authority
CN
China
Prior art keywords
tool box
placing box
fixed
box
movable plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810121718.4A
Other languages
Chinese (zh)
Other versions
CN108297050A (en
Inventor
罗诗敏
柴霞霞
周鹏
陈昊
李闻淼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taizhou Diguang plastic mould Co.,Ltd.
Original Assignee
Taizhou Diguang Plastic Mould Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taizhou Diguang Plastic Mould Co ltd filed Critical Taizhou Diguang Plastic Mould Co ltd
Priority to CN201810121718.4A priority Critical patent/CN108297050B/en
Publication of CN108297050A publication Critical patent/CN108297050A/en
Application granted granted Critical
Publication of CN108297050B publication Critical patent/CN108297050B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25HWORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H3/00Storage means or arrangements for workshops facilitating access to, or handling of, work tools or instruments
    • B25H3/02Boxes
    • B25H3/021Boxes comprising a number of connected storage elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention relates to a movable hardware tool box which comprises a tool box main body and a second support plate, wherein a sliding rail is fixed at the top end inside the tool box main body, limiting plates are arranged on the left side and the right side of the lower end of the sliding rail, a placing box is arranged on the inner sides of the limiting plates, a hook is fixed at the upper end of the placing box, a hanging ring is arranged above the hanging ring, a first support plate is fixed at the upper end of the hanging ring, a movable plate is arranged inside the placing box, an air inlet is arranged below the movable plate, a drying box is fixed below the air inlet, the second support plate is located below the placing box, the bottom end of the second support plate is connected with a telescopic frame, a first hydraulic cylinder is connected to the left side of the telescopic frame, and a second hydraulic cylinder is arranged below the telescopic frame. The invention has the beneficial effects that: this portable hardware and tools case is provided with the universal wheel, can be convenient remove the toolbox through the universal wheel.

Description

Portable hardware and tools case
Technical Field
The invention relates to the technical field of hardware devices, in particular to a movable hardware tool box.
Background
Hardware products, also called small hardware, refer to five metals of gold, silver, copper, iron and tin, can be made into artworks or metal devices such as knives and swords through manual processing, and the hardware of modern society is more extensive, such as hardware tools, hardware parts, daily hardware, building hardware, security articles and the like, and the small hardware products are mostly not final consumer goods, and the hardware products need to be placed in a tool box for storage, thereby avoiding the occurrence of disorder and no seal of the hardware devices.
The existing hardware tool box cannot conveniently classify and firmly place hardware devices, the internal space of the hardware tool box is fixed, a great deal of inconvenience is caused when the hardware tool box is used, the quality of the hardware devices can be influenced by the fact that air in the tool box is wet, the hardware devices cannot be stored for a long time, the internal space of the hardware tool box cannot be conveniently adjusted according to use requirements, and the hardware tool box is not practical enough and is not firm enough when being placed on the ground.
Disclosure of Invention
The invention aims to provide a movable hardware tool box, which solves the problems that the existing hardware tool box proposed in the background technology can not conveniently and firmly place hardware devices in a classified manner, the internal space of the hardware tool box is fixed, the hardware tool box is inconvenient to use, the quality of the hardware devices can be influenced due to the fact that air in the tool box is wet, the hardware devices cannot be stored for a long time, the internal space of the hardware tool box cannot be conveniently adjusted according to the use requirement, the hardware tool box is not practical enough, and the hardware tool box is not firm enough when placed on the ground.
In order to achieve the purpose, the invention provides the following technical scheme: a movable hardware tool box comprises a tool box main body and a second support plate, wherein a sliding rail is fixed at the top end inside the tool box main body, limiting plates are arranged on the left side and the right side of the bottom end of the sliding rail, a placing box is arranged on the inner side of each limiting plate, a hook is fixed at the upper end of the placing box, a hanging ring is arranged above the hanging ring, a first support plate is fixed at the upper end of the hanging ring, a movable plate is arranged inside the placing box, an air inlet is arranged below the movable plate, a drying box is fixed below the air inlet, the second support plate is positioned below the placing box, the bottom end of the second support plate is connected with a telescopic frame, a first hydraulic cylinder is connected to the left side of the telescopic frame, a second hydraulic cylinder is arranged below the telescopic frame, the bottom end of the second hydraulic cylinder is connected with the upper end of a fastening block through a connecting rod, and universal wheels are installed on the outer side of the fastening block, the inside of drying cabinet is provided with the drawing groove, the inboard of placing the case is provided with flexible post, and the rolling bearing is installed to the below of flexible post.
Preferably, the limiting plate is tightly attached to the outer wall of the outermost box, and the limiting plate is movably connected with the sliding rail.
Preferably, the placing box forms a dismounting structure through the hook and the hanging ring, and the hook is welded with the placing box in a connecting mode.
Preferably, the movable plate comprises a spring, a limiting block and a through hole, the limiting block is fixed on the inner wall of the spring, the through hole is located in the center of the movable plate, and a telescopic structure is arranged between the limiting block and the spring.
Preferably, the upper side and the lower side of the movable plate are both provided with sliding plates, and the movable plate is movably connected with the sliding plates.
Preferably, the air inlet is a through structure, and a communication structure is arranged between the air inlet and the drying box.
Preferably, the rotary bearing includes a rotary ball and a rotary inner cylinder, and the rotary inner cylinder is disposed inside the rotary ball.
Preferably, the second support plate and the telescopic frame form a lifting structure, and the fastening block and the second hydraulic cylinder form the lifting structure through a connecting rod.
Preferably, the button is fixed on the outer surface of the drawing groove, and the drawing groove is movably connected with the drying box.
Compared with the prior art, the invention has the beneficial effects that: the movable hardware tool box is provided with universal wheels, the tool box can be conveniently moved through the universal wheels, the second hydraulic cylinder is arranged, the fastening block can be driven to press downwards through the second hydraulic cylinder, so that the fastening block can be firmly pressed with the ground, the firmness of the whole tool box is ensured, the second support plate and the telescopic frame form a lifting structure, the second support plate can be conveniently lifted through the telescopic frame, the inner space can be conveniently adjusted, the limiting plate can firmly limit the position of the placing box, the stability of the placing box is ensured, 4 placing boxes can be used for well isolating and placing hardware instruments, the hardware instruments can be firmly clamped through the springs, the loosening condition of the hardware instruments is avoided, the drying box is arranged, and the drying box can dry the air inside the tool box, guaranteed the quality of placing hardware therein, pull through the pull groove can be convenient change its inside drier, dry effect has been guaranteed, the conversion can be adjusted to the position that the rotation in rolling bearing can be convenient to inside structure, it is more convenient to use, be swing joint between the fly leaf of setting and the slide, the fly leaf carries out convenient dismantlement through the slip between with the slide, thereby be convenient for maintain the clearance to the fly leaf, the practicality and the functionality of this portable hardware and tools case have been improved greatly.
Drawings
FIG. 1 is a schematic structural diagram of a portable hardware tool box according to the present invention;
FIG. 2 is a schematic diagram of a top view of a movable plate of the portable hardware tool box of the present invention;
FIG. 3 is an enlarged view of a portion of the portable hardware tool box of FIG. 1;
FIG. 4 is a schematic diagram of a top view of a rotatable bearing of the portable hardware tool box of the present invention;
fig. 5 is a schematic view of a part of an enlarged structure at B in fig. 1 of a mobile hardware tool box according to the present invention.
In the figure: 1. the tool box comprises a tool box body, 2, a sliding rail, 3, a limiting plate, 4, a placing box, 5, a hook, 6, a hanging ring, 7, a first supporting plate, 8, a movable plate, 801, a spring, 802, a limiting block, 803, a through hole, 9, an air inlet, 10, a drying box, 11, a telescopic column, 12, a rotating bearing, 1201, a rotating ball, 1202, a rotating inner cylinder, 13, a second supporting plate, 14, a telescopic frame, 15, a first hydraulic cylinder, 16, a second hydraulic cylinder, 17, a connecting rod, 18, a fastening block, 19, a universal wheel, 20, a drawing groove, 21 and a button.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a movable hardware tool box comprises a tool box main body 1, a sliding rail 2, limiting plates 3, a placing box 4, a hook 5, a hanging ring 6, a first supporting plate 7, a movable plate 8, an air inlet 9, a drying box 10, a telescopic column 11, a rotary bearing 12, a second supporting plate 13, a telescopic frame 14, a first hydraulic cylinder 15, a second hydraulic cylinder 16, a connecting rod 17, a fastening block 18, a universal wheel 19, a drawing groove 20, a button 21 and a sliding plate, wherein the sliding rail 2 is fixed at the top end inside the tool box main body 1, the limiting plates 3 are arranged on the left side and the right side of the bottom end of the sliding rail 2, the placing box 4 is arranged on the inner side of each limiting plate 3, the hook 5 is fixed at the upper end of the placing box 4, the limiting plates 3 are tightly attached to the outer wall of the placing box 4 on the outermost side, the limiting plates 3 are movably connected with the sliding rail 2, the limiting plates 3 can firmly limit the position of the placing box 4, the stability of the placing box 4 is ensured, the placing box 4 forms a dismounting structure through the hook 5 and the hanging ring 6, the connecting mode between the hook 5 and the placing box 4 is welding, the placing box 4 can be conveniently dismounted through the hook 5 and the hanging ring 6, the hanging ring 6 is arranged above the hook 5, the upper end of the hanging ring 6 is fixed with the first support plate 7, the inside of the placing box 4 is provided with the movable plate 8, the air inlet 9 is arranged below the movable plate 8, the movable plate 8 comprises a spring 801, a limit block 802 and a through hole 803, the inner wall of the spring 801 is fixed with the limit block 802, the through hole 803 is positioned at the center of the movable plate 8, the limit block 802 and the spring 801 are of a telescopic structure, hardware instruments can be firmly clamped through the spring 801, the condition that the hardware instruments are loosened is avoided, the upper side and the lower side of the movable plate 8 are both provided with sliding plates, and the movable connection is formed between the movable plate 8 and the sliding plates, the movable plate 8 is conveniently disassembled through sliding between the movable plate 8 and the sliding plate, so that the movable plate 8 is conveniently maintained and cleaned, the drying box 10 is fixed below the air inlet 9, the air inlet 9 is of a through structure, the air inlet 9 and the drying box 10 are of a communicated structure, wet air enters the drying box 10 through the air inlet 9 to be dried, the drying of the internal environment is guaranteed, the second support plate 13 is positioned below the placing box 4, the bottom end of the second support plate 13 is connected with the telescopic frame 14, the second support plate 13 and the telescopic frame 14 form a lifting structure, the fastening block 18 and the second hydraulic cylinder 16 form a lifting structure through the connecting rod 17, the second support plate 13 can be conveniently lifted through the telescopic frame 14, so that the internal space is conveniently adjusted, the left side of the telescopic frame 14 is connected with the first hydraulic cylinder 15, and the second hydraulic cylinder 16 is arranged below the telescopic frame 14, the bottom of second hydraulic cylinder 16 is connected with the upper end of fastening block 18 through connecting rod 17, and universal wheel 19 is installed in the outside of fastening block 18, the inside of drying cabinet 10 is provided with pull groove 20, the external fixed surface in pull groove 20 has button 21, and be swing joint between pull groove 20 and the drying cabinet 10, the pull through pull groove 20 can be convenient change its inside drier, dry effect has been guaranteed, the inboard of placing case 4 is provided with flexible post 11, and rolling bearing 12 is installed to the below of flexible post 11, rolling bearing 12 is including rotating ball 1201 and rotating inner tube 1202, the inboard of rotating ball 1201 is provided with rotates inner tube 1202, the inside structure can be convenient through the rotation in rolling bearing 12 to the position adjust the conversion, it is more convenient to use.
The working principle of the embodiment is as follows: the movable hardware tool box can be conveniently moved by the universal wheel 19, the fastening block 18 can be driven to press downwards by the second hydraulic cylinder 16, so that the fastening block 18 can be firmly pressed with the ground, the firmness of the whole tool box is ensured, hardware devices are placed between the springs 801, the springs 801 can firmly clamp the hardware devices, the condition that the hardware devices are loosened is avoided, wet air enters the drying box 10 through the air inlet 9 to be dried, the drying of the internal environment is ensured, drying agents in the hardware devices can be conveniently replaced by drawing of the drawing groove 20, the drying effect is ensured, the internal structure can conveniently adjust and convert the position by rotating in the rotating bearing 12, the second support plate 13 can be conveniently lifted by the expansion of the first hydraulic cylinder 15 which drives the expansion bracket 14, thereby be convenient for adjust the space of inside, limiting plate 3 can be firm prescribe a limit to the position of placing case 4, guaranteed the stability of placing case 4, fly leaf 8 through with the slide between the slide carry out convenient dismantlement to be convenient for maintain the clearance to fly leaf 8, dismantle placing case 4 through what couple 5 and link 6 can be convenient, dismantle also more convenient, this is exactly the theory of operation of this portable hardware and tools case.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (9)

1. The utility model provides a portable hardware and tools case, includes toolbox main part (1) and second extension board (13), its characterized in that: a sliding rail (2) is fixed at the top end inside the tool box main body (1), limiting plates (3) are arranged on the left side and the right side of the bottom end of the sliding rail (2), a placing box (4) is arranged on the inner side of each limiting plate (3), a hook (5) is fixed at the upper end of the placing box (4), a hanging ring (6) is arranged above the hook (5), a first supporting plate (7) is fixed at the upper end of the hanging ring (6), a movable plate (8) is arranged inside the placing box (4), an air inlet (9) is arranged below the movable plate (8), a drying box (10) is fixed below the air inlet (9), a second supporting plate (13) is positioned below the placing box (4), the bottom end of the second supporting plate (13) is connected with a telescopic frame (14), and a first hydraulic cylinder (15) is connected to the left side of the telescopic frame (14), and a second hydraulic cylinder (16) is arranged below the telescopic frame (14), the bottom end of the second hydraulic cylinder (16) is connected with the upper end of a fastening block (18) through a connecting rod (17), universal wheels (19) are installed on the outer side of the fastening block (18), a drawing groove (20) is arranged inside the drying box (10), a telescopic column (11) is arranged on the inner side of the placing box (4), and a rotating bearing (12) is installed below the telescopic column (11).
2. A mobile hardware tool box according to claim 1, characterized in that: the limiting plate (3) is tightly attached to the outer wall of the outermost placing box (4), and the limiting plate (3) is movably connected with the sliding rail (2).
3. A mobile hardware tool box according to claim 1, characterized in that: the placing box (4) and the hanging ring (6) form a dismounting structure through the hook (5), and the hook (5) and the placing box (4) are connected in a welding mode.
4. A mobile hardware tool box according to claim 1, characterized in that: the movable plate (8) comprises a spring (801), a limiting block (802) and a through hole (803), the limiting block (802) is fixed on the inner wall of the spring (801), the through hole (803) is located in the center of the movable plate (8), and a telescopic structure is arranged between the limiting block (802) and the spring (801).
5. A mobile hardware tool box according to claim 1, characterized in that: the upper side and the lower side of the movable plate (8) are both provided with sliding plates, and the movable plate (8) is movably connected with the sliding plates.
6. A mobile hardware tool box according to claim 1, characterized in that: the air inlet (9) is of a through structure, and a communicating structure is arranged between the air inlet (9) and the drying box (10).
7. A mobile hardware tool box according to claim 1, characterized in that: the rotating bearing (12) comprises a rotating ball (1201) and a rotating inner cylinder (1202), and the rotating inner cylinder (1202) is arranged on the inner side of the rotating ball (1201).
8. A mobile hardware tool box according to claim 1, characterized in that: the second support plate (13) and the telescopic frame (14) form a lifting structure, and the fastening block (18) and the second hydraulic cylinder (16) form the lifting structure through a connecting rod (17).
9. A mobile hardware tool box according to claim 1, characterized in that: the button (21) is fixed on the outer surface of the drawing groove (20), and the drawing groove (20) is movably connected with the drying box (10).
CN201810121718.4A 2018-02-07 2018-02-07 Portable hardware and tools case Active CN108297050B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810121718.4A CN108297050B (en) 2018-02-07 2018-02-07 Portable hardware and tools case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810121718.4A CN108297050B (en) 2018-02-07 2018-02-07 Portable hardware and tools case

Publications (2)

Publication Number Publication Date
CN108297050A CN108297050A (en) 2018-07-20
CN108297050B true CN108297050B (en) 2021-09-03

Family

ID=62864348

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810121718.4A Active CN108297050B (en) 2018-02-07 2018-02-07 Portable hardware and tools case

Country Status (1)

Country Link
CN (1) CN108297050B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108818472A (en) * 2018-08-27 2018-11-16 安徽千载佳科技有限公司 A kind of machined part placement cabinet
CN110803437B (en) * 2019-11-03 2024-01-30 泰州市宇锋机械有限公司 Cabinet is placed to five metals
CN110803438B (en) * 2019-11-03 2024-01-30 江苏诺丁金属科技有限公司 Hardware storage equipment
CN114100912B (en) * 2021-12-06 2024-05-03 金筑铝业(天津)有限公司 Hanging mechanism easy to assemble and disassemble for aluminum veneer production

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4628580A (en) * 1983-02-23 1986-12-16 Hughes Aircraft Company Method for using kitting parts carousel system
CN203789570U (en) * 2014-04-16 2014-08-27 王富国 Rotating clothes rack controlled by music
CN204819449U (en) * 2015-07-31 2015-12-02 国网山东省电力公司淄博供电公司 Electric power is automated tool case for operation
CN105215965A (en) * 2015-11-16 2016-01-06 刘雷 A kind of highway mobile automobile maintenance instrument case of safe and convenient
CN205148286U (en) * 2015-11-25 2016-04-13 国网河南桐柏县供电公司 Electric power tool cabinet
CN105856183A (en) * 2016-05-16 2016-08-17 安庆米锐智能科技有限公司 Lifting platform for maintenance of power equipment
CN106363596A (en) * 2016-12-01 2017-02-01 十堰市天策模具股份有限公司 Storage rack of automobile stamping die manufacturing tools
CN107625354A (en) * 2017-11-18 2018-01-26 浙江金泰科新材料有限公司 A kind of hardware sale Display Rack for being easy to dedusting
CN206967440U (en) * 2017-05-23 2018-02-06 泉州路路通园林工程有限公司 A kind of portable tool box for building

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4628580A (en) * 1983-02-23 1986-12-16 Hughes Aircraft Company Method for using kitting parts carousel system
CN203789570U (en) * 2014-04-16 2014-08-27 王富国 Rotating clothes rack controlled by music
CN204819449U (en) * 2015-07-31 2015-12-02 国网山东省电力公司淄博供电公司 Electric power is automated tool case for operation
CN105215965A (en) * 2015-11-16 2016-01-06 刘雷 A kind of highway mobile automobile maintenance instrument case of safe and convenient
CN205148286U (en) * 2015-11-25 2016-04-13 国网河南桐柏县供电公司 Electric power tool cabinet
CN105856183A (en) * 2016-05-16 2016-08-17 安庆米锐智能科技有限公司 Lifting platform for maintenance of power equipment
CN106363596A (en) * 2016-12-01 2017-02-01 十堰市天策模具股份有限公司 Storage rack of automobile stamping die manufacturing tools
CN206967440U (en) * 2017-05-23 2018-02-06 泉州路路通园林工程有限公司 A kind of portable tool box for building
CN107625354A (en) * 2017-11-18 2018-01-26 浙江金泰科新材料有限公司 A kind of hardware sale Display Rack for being easy to dedusting

Also Published As

Publication number Publication date
CN108297050A (en) 2018-07-20

Similar Documents

Publication Publication Date Title
CN108297050B (en) Portable hardware and tools case
CN205596453U (en) Novel circuit board dust shaker
CN207357795U (en) A kind of milling train easy to assembling
CN218297943U (en) Filter membrane finished product hydrostatic pressure tester
CN207911223U (en) A kind of radiating adjustable Electric Appliance Cabinet
CN207434067U (en) A kind of new circuit board hutch with moisture-proof function
CN207619685U (en) A kind of window clothes airing device suitable for no balcony building
CN207062606U (en) A kind of clothes hanger with extension rod
CN209164990U (en) A kind of suspension apparatus for placing of thermohygrometer
CN209010786U (en) A kind of clothes hanger being conveniently adjusted
CN209537869U (en) A kind of folding hardware drying frame being placed on wall
CN210567329U (en) Mounting base for electrical automation equipment
CN216364672U (en) Environment-friendly energy-saving type wooden clothes hanger
CN209098065U (en) A kind of loop wheel machine with mounting plate Guiding wheel structure
CN207699133U (en) Equipment is hung in a kind of translation of double track
CN208438111U (en) A kind of round-bar pass feeding rack device
CN207840786U (en) A kind of quick release tooling
CN206655032U (en) A kind of convenient multifunctional clothes hanger
CN208118014U (en) A kind of fixed device of Furniture manufacturing punching
CN205820452U (en) A kind of cloth wrap-up that can remove batting
CN205902260U (en) Waterproof type POI machine stores pylon for case
CN210771155U (en) Suspension supporting mechanism of industrial computer
CN213597783U (en) Easily clean laminated glass
CN216757786U (en) Easy-to-maintain plate processing and stamping equipment
CN213009724U (en) Metal storage box for rush-repair of guardrail facilities

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20190618

Address after: 226600 Innovation Village Group 10, Qutang Town, Haian County, Nantong City, Jiangsu Province

Applicant after: Fan Yuanyuan

Address before: 100022 Beijing Chaoyang District Pingle Park 100 Beijing University of Technology

Applicant before: Luo Shimin

SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20210818

Address after: 318000 Luohui Huang Village, Beicheng street, Huangyan District, Taizhou City, Zhejiang Province

Applicant after: Taizhou Diguang plastic mould Co.,Ltd.

Address before: 226600 Innovation Village Group 10, Qutang Town, Haian County, Nantong City, Jiangsu Province

Applicant before: Fan Yuanyuan

GR01 Patent grant
GR01 Patent grant