CN115416123B - Environment-friendly furniture manufacturing plate processing method - Google Patents
Environment-friendly furniture manufacturing plate processing method Download PDFInfo
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- CN115416123B CN115416123B CN202211036356.1A CN202211036356A CN115416123B CN 115416123 B CN115416123 B CN 115416123B CN 202211036356 A CN202211036356 A CN 202211036356A CN 115416123 B CN115416123 B CN 115416123B
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- supporting
- fixedly connected
- cylinder
- cylinder body
- shaft
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000003672 processing method Methods 0.000 title claims description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 30
- 238000005507 spraying Methods 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000011941 photocatalyst Substances 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 239000002023 wood Substances 0.000 description 11
- 239000003292 glue Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 210000001145 finger joint Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- -1 phenolic aldehyde Chemical class 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/0228—Spraying apparatus, e.g. tunnels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Drying Of Solid Materials (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention relates to the technical field of plate processing, in particular to a method for processing plates for manufacturing environment-friendly furniture, which comprises the following steps: firstly, building a cylinder with an air duct, and arranging a plate in the cylinder in the same extending direction as the air duct; step two, enabling hot air flow to pass through the air duct; step three, the inside of the cylinder body is moistened; and fourthly, drying the inside of the cylinder body by utilizing the hot air flow, and repeating the steps to reduce the formaldehyde content of the plate.
Description
Technical Field
The invention relates to the technical field of plate processing, in particular to a method for processing plates for manufacturing environment-friendly furniture.
Background
In the production process of the artificial board, urea formaldehyde, phenolic aldehyde and melamine formaldehyde resin are used as adhesives in a large amount, wherein the urea formaldehyde resin is favored by most manufacturers due to low price, but the formaldehyde release amount is higher than that of other glues. The density board is made up by using wood and other plant fibre as main raw materials, mixing them with sizing material, hardening agent and water-proofing agent, etc. after the powder treatment, and finally pressing them into the invented product. Since the interior is mostly fine particles, a large amount of glue is required to be added for adhesion. This results in a severe formaldehyde pollution of the density board. Wherein the particle board is formed by crushing wood, pulverizing into particle scraps with different sizes, and agglomerating the particle scraps into a board through glue. Finer chips are used as the upper and lower surfaces of the board, and the middle layer is coarser chips. The interior is mostly granular, and the needed glue content is higher. Plywood is produced by cutting raw wood into thin wood pieces and bonding the thin wood pieces with adhesive layers, and is used for back boards, bottom boards and the like of wood products. And can be used together with other solid wood materials, density boards, finger boards and the like. The production process of plywood is understood to be the bonding of layers by glue. The solid wood finger joint plate is formed by splicing a plurality of wood boards, a zigzag interface is used between the vertical wood boards, and the solid wood finger joint plate is similar to the intersection of fingers of two hands. The glue consumption is very little, mainly because the plank relies on tooth form interface concatenation, has abandoned the preparation technology that uses glue to bond upper and lower panel before, still has a small amount of formaldehyde.
Disclosure of Invention
The invention provides a processing method for manufacturing boards of environment-friendly furniture, which aims to reduce the formaldehyde content of boards.
The above object is achieved by the following technical scheme:
the processing method of the environment-friendly furniture manufacturing plate comprises the following steps:
firstly, building a cylinder with an air duct, and arranging a plate in the cylinder in the same extending direction as the air duct;
step two, enabling hot air flow to pass through the air duct;
step three, the inside of the cylinder body is moistened;
and step four, drying the inside of the cylinder body by utilizing the hot air flow.
The method is realized by a plate processing device, the device comprises a cylinder which is communicated back and forth, the upper end of the cylinder is provided with an opening, the upper end of the cylinder is provided with a cover for opening or closing the opening, and the lower end of the cover is fixedly connected and communicated with a liquid spraying part.
The lower end of the cylinder body is fixedly connected and communicated with a liquid discharge pipe.
The area of the bottom of the inner wall of the cylinder, which is close to the liquid discharge pipe, gradually extends downwards to be connected with the liquid discharge pipe.
The device also comprises a main shaft, wherein the front end and the rear end of the main shaft are respectively and rotatably connected to the two outer supporting frames, the two outer supporting frames are respectively and fixedly connected with the front end and the rear end of the cylinder body, the main shaft is driven by a motor to realize rotation, and the device also comprises a supporting component;
the support assembly comprises a frame, support rods fixedly connected to the left side and the right side of the frame, jacks are distributed on the support rods from front to back, the support assembly further comprises support brackets, each support bracket comprises a support seat, a vertical seat fixedly connected to the upper end of each support seat, shafts I connected to the upper sides of the vertical seats in a rotating mode, one ends of the shafts I are fixedly connected to rods I at the side ends of the shafts I, rods II are fixedly connected to the other ends of the rods I, the rods II can abut against the support seats to achieve line contact, a pre-tightening piece I capable of abutting against the vertical seats is connected to the shafts I through threads, a shaft II is connected to the left end and the right end of the rear side of each support seat in a rotating mode, rods III are fixedly connected to the shafts II through threads, the support brackets are arranged in a front-back mirror symmetry mode, the support seats are connected to the two support rods in a sliding mode, and the support seats penetrate through the support seats and the jacks to achieve positioning through pins;
the main shaft is fixedly connected with an inner supporting frame for supporting the assembly, and the frame is fixedly connected with the inner supporting frame.
The support assembly is evenly provided with three support seats which are positioned at the highest point in the circumferential direction around the shaft II, and the liquid spraying part can spray the liquid onto the support seat which is positioned at the lowest point.
The support components are arranged in a linear array along the extending direction of the shaft II.
Drawings
FIG. 1 is a schematic flow diagram of a method for processing an environment-friendly furniture manufacturing board;
FIG. 2 is a schematic diagram of the overall structure of an environment-friendly furniture manufacturing board processing device;
FIGS. 3 and 4 are schematic views of the structure of the cartridge, the cap, the liquid ejecting section, and the liquid discharging tube;
FIG. 5 is a schematic view of the structure of the interior of the cylinder;
FIG. 6 is a schematic diagram of a portion of the structure of FIG. 5;
FIG. 7 is a schematic diagram of a portion of the second embodiment of FIG. 5;
fig. 8 is a partial schematic view of fig. 7.
Detailed Description
An environment-friendly furniture manufacturing plate processing method comprises the following steps:
firstly, supporting the bottom of the cylinder 11 by using a supporting piece to separate the cylinder 11 from the ground, conducting the cylinder 11 back and forth to realize the construction of the cylinder 11 with the air duct, and placing the plate in the cylinder 11, wherein the extending direction of the plate is the same as the direction of the air duct;
installing drainage covers at the front end and the rear end of the cylinder 11, which are not shown in the drainage cover diagram and are used for reducing the opening of the cylinder 11, wherein the inner diameter of the drainage cover at the rear end of the cylinder 11 gradually increases from the rear to the front until the drainage cover is connected with the rear end of the cylinder 11, and the inner diameter of the drainage cover at the front end of the cylinder 11 gradually decreases from the front to the rear until the drainage cover is connected with the front end of the cylinder 11; a hot air blower is arranged at the drainage cover positioned at the rear side, and hot air is sent into the cylinder 11 to generate hot air flow before being arranged at the rear; the temperature of the hot gas stream is 39 to 60 ℃;
thirdly, spraying a formaldehyde removal photocatalyst solution or a quaternary ammonium salt disinfectant on the plate in a spraying manner, wetting the inside of the cylinder 11, accelerating formaldehyde volatilization by combining the temperature, and taking the formaldehyde out of the cylinder 11 by using air flow;
step four, drying the inside of the cylinder 11 by using the hot air flow;
the first to fourth steps are realized by an environmental protection furniture manufacturing board processing device, the device comprises a barrel 11, an opening is arranged at the upper end of the barrel 11, a cover 12 for opening or closing the opening is arranged at the upper end of the barrel 11, a liquid spraying part 13 is fixedly connected and communicated with the lower end of the cover 12, the cover 12 is communicated with a pipeline through a pump, and after the liquid is injected into the liquid spraying part 13, the liquid is sprayed onto the board in the barrel 11 through the liquid spraying part 13;
the lower end of the cylinder 11 is fixedly connected and communicated with a liquid discharge pipe 14 for discharging redundant liquid;
the area of the bottom of the inner wall of the cylinder 11 near the liquid discharge pipe 14 gradually extends downward to engage with the liquid discharge pipe 14, so that the liquid can be concentrated toward the liquid discharge pipe 14 to avoid stagnation.
The device also comprises a main shaft 21, wherein the front end and the rear end of the main shaft 21 are respectively and rotatably connected to two outer supporting frames 22, the two outer supporting frames 22 are respectively and fixedly connected with the front end and the rear end of the inner wall of the cylinder 11, the main shaft 21 is fixedly connected with an output shaft of a motor 24, the output shaft of the motor 24 is arranged backwards, the shell of the motor 24 is fixedly connected to the outer supporting frames 22 positioned at the front side, and the device also comprises a supporting component;
wherein, the supporting component comprises a frame 31, supporting rods 32 fixedly connected at the left side and the right side of the frame 31, transverse insertion holes 33 are distributed on the supporting rods 32 from front to back, the supporting component further comprises a supporting bracket, as shown in figure 8, the supporting bracket comprises a supporting seat 41, a vertical seat 42 fixedly connected at the rear side of the upper end of the supporting seat 41, a transverse shaft I43 rotatably connected at the upper side of the vertical seat 42, a rod I44 with one end fixedly connected at the side end of the shaft I43, the axis of the rod I44 is vertical to the axis of the shaft I43, the other end of the rod I44 is connected with a rod II 45, the rod II 45 is transversely arranged, the rod II 45 can be abutted against the supporting seat 41 in a line contact manner through the rotation of the shaft I43, an external thread is arranged on the shaft I43, the shaft I46 is connected with a pre-tightening piece I46 through threads, the pre-tightening piece I46 is abutted against the vertical seat 42 to realize the locking of the shaft I43, the left end and the right end of the rear side of the supporting seat 41 are respectively rotatably connected with a vertical shaft II 47, the shaft II 47 is fixedly connected with a rod III 48 extending forwards, the rod III 48 is T-shaped, the rear side of the rod III 48 is a horizontal part, the front side is a vertical part, the shaft II 47 is connected with a pre-tightening piece II 49 which can be propped against the supporting seat 41 through threads, the pre-tightening piece II 49 is used for locking the shaft II 47, the supporting seats are arranged in a front-rear mirror symmetry manner, the supporting seats 41 positioned at the front side are slidably connected at the front sides of the two supporting rods 32, the supporting seats 41 positioned at the rear side are slidably connected at the rear sides of the two supporting rods 32, the supporting seats 41 penetrate through the supporting seats and the jacks 33 through pins 34, the positioning of the supporting seats 41 is realized, the front supporting seat 41 and the rear supporting seats 41 can be changed to support plates with different lengths, the rod II 45 is used for contacting the upper ends of the plates, the vertical part of the rod III 48 is used for contacting the left end and the right end of the plates, limiting is further realized, the falling of the plates is avoided, the clamping scheme is not adopted, the plate is prevented from being damaged, and a rubber layer or a silica gel layer is arranged at the part contacted with the plate.
The main shaft 21 is fixedly connected with an inner support frame 23 for supporting assembly installation, and the frame 31 is fixedly connected with the inner support frame 23.
The supporting components are evenly arranged in the circumferential direction around the shaft II 47, the starting motor 24 drives the main shaft 21 to rotate, the main shaft 21 drives the inner supporting frame 23 to rotate, the inner supporting frame 23 drives all the supporting components to rotate around the main shaft 21, the supporting seat 41 when the supporting components in rotation are at the highest position is in a horizontal state so that the plate faces the liquid spraying part 13, when the supporting components in rotation are at the lowest position, the supporting seat 41 is also in a horizontal state so that the back face of the plate faces the liquid spraying part 13, and the liquid spraying part 13 can spray the liquid onto the plate at the lowest point.
The support members are arranged in a linear array along the extension direction of the axis II 47.
Claims (4)
1. The processing method of the environment-friendly furniture manufacturing plate comprises the following steps:
firstly, building a cylinder (11) with an air duct, and arranging a plate in the cylinder (11) in the same extending direction as the air duct;
step two, enabling hot air flow to pass through the air duct;
step three, the inside of the cylinder body (11) is moistened; the wet liquid in the cylinder (11) adopts formaldehyde removal photocatalyst solution;
step four, drying the inside of the cylinder (11) by utilizing the hot air flow;
the method for processing the environment-friendly furniture manufacturing plate is realized by a plate processing device, the device comprises a cylinder body (11) which is communicated back and forth, an opening is arranged at the upper end of the cylinder body (11), a cover (12) for opening or closing the opening is arranged at the upper end of the cylinder body (11), and the lower end of the cover (12) is fixedly connected and communicated with a liquid spraying part (13);
the device also comprises a hot air blower which enables the interior of the cylinder (11) to generate hot air flow;
the lower end of the cylinder body (11) is fixedly connected and communicated with a liquid discharge pipe (14);
the area of the bottom of the inner wall of the cylinder body (11) close to the liquid discharge pipe (14) gradually extends downwards to be connected with the liquid discharge pipe (14);
the device also comprises a main shaft (21), wherein the front end and the rear end of the main shaft (21) are respectively and rotatably connected to two outer supporting frames (22), the two outer supporting frames (22) are respectively and fixedly connected with the front end and the rear end of the cylinder body (11), the main shaft (21) is driven by a motor (24) to realize rotation, and the device also comprises a supporting component;
the supporting component comprises a frame (31), supporting rods (32) fixedly connected to the left side and the right side of the frame (31), jacks (33) are distributed on the supporting rods (32) from front to back, the supporting component further comprises supporting brackets, each supporting bracket comprises a supporting seat (41), a vertical seat (42) fixedly connected to the upper end of each supporting seat (41), a shaft I (43) rotatably connected to the upper side of each vertical seat (42), a rod I (44) with one end fixedly connected to the side end of each shaft I (43), a connecting rod II (45) is fixedly connected to the other end of each rod I (44), the rods II (45) can be abutted to the supporting seats (41) to achieve line contact, pre-tightening pieces I (46) capable of being abutted to the corresponding vertical seats (42) are connected to the shafts I (43) through threads, a shaft II (47) is fixedly connected to the shafts III (48) through threads, pre-tightening pieces II (49) capable of being abutted to the supporting seats (41) are connected to the corresponding supporting seats through threads, and the supporting seats are symmetrically arranged on the supporting seats (41) and penetrate through the supporting rods (33) to achieve mirror image positioning;
an inner supporting frame (23) for supporting assembly installation is fixedly connected to the main shaft (21), and a frame (31) is fixedly connected to the inner supporting frame (23);
the distance between the support components avoids the upper support component from shielding the lower support component.
2. The method of claim 1, wherein the temperature of the hot gas stream is 39 to 60 ℃.
3. The method according to claim 1, wherein three support assemblies are uniformly arranged around the shaft II (47) in the circumferential direction, the support seat (41) at the highest point is horizontal, and the liquid spraying part (13) can spray the liquid onto the support seat (41) at the lowest point.
4. The method of claim 1, wherein the support members are arranged in a linear array along the extension direction of the axis ii (47).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211036356.1A CN115416123B (en) | 2022-08-28 | 2022-08-28 | Environment-friendly furniture manufacturing plate processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211036356.1A CN115416123B (en) | 2022-08-28 | 2022-08-28 | Environment-friendly furniture manufacturing plate processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115416123A CN115416123A (en) | 2022-12-02 |
| CN115416123B true CN115416123B (en) | 2023-11-24 |
Family
ID=84199965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211036356.1A Active CN115416123B (en) | 2022-08-28 | 2022-08-28 | Environment-friendly furniture manufacturing plate processing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN115416123B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204730396U (en) * | 2015-04-07 | 2015-10-28 | 广东左凡智能家居科技有限公司 | A kind of pretreatment warehouse reducing Furniture panel free formaldehyde content |
| CN106839181A (en) * | 2017-01-05 | 2017-06-13 | 广东汇兴精工智造股份有限公司 | A kind of artificial board removes formaldehyde sterilizing and purifying device |
| CN111036052A (en) * | 2019-12-27 | 2020-04-21 | 武汉宝绿环保科技有限公司 | Process method for treating indoor formaldehyde pollution |
| CN214326521U (en) * | 2020-11-26 | 2021-10-01 | 无锡信营智能装备科技有限公司 | Stacking device with adjustable length |
-
2022
- 2022-08-28 CN CN202211036356.1A patent/CN115416123B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204730396U (en) * | 2015-04-07 | 2015-10-28 | 广东左凡智能家居科技有限公司 | A kind of pretreatment warehouse reducing Furniture panel free formaldehyde content |
| CN106839181A (en) * | 2017-01-05 | 2017-06-13 | 广东汇兴精工智造股份有限公司 | A kind of artificial board removes formaldehyde sterilizing and purifying device |
| CN111036052A (en) * | 2019-12-27 | 2020-04-21 | 武汉宝绿环保科技有限公司 | Process method for treating indoor formaldehyde pollution |
| CN214326521U (en) * | 2020-11-26 | 2021-10-01 | 无锡信营智能装备科技有限公司 | Stacking device with adjustable length |
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| Publication number | Publication date |
|---|---|
| CN115416123A (en) | 2022-12-02 |
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| PB01 | Publication | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20231102 Address after: No. 157, Zone 202A, 2nd Floor, Building 1, No. 91 South Third Ring West Road, Fengtai District, Beijing, 100000 Applicant after: Beijing Duanrui Furniture Co.,Ltd. Address before: No. 268, Kangqiao East Road, Pudong New Area, Shanghai, 201210 Applicant before: Shi Mengting |
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