CN111809446B - Deacidification atomizer and spraying deacidification machine - Google Patents
Deacidification atomizer and spraying deacidification machine Download PDFInfo
- Publication number
- CN111809446B CN111809446B CN202010705548.1A CN202010705548A CN111809446B CN 111809446 B CN111809446 B CN 111809446B CN 202010705548 A CN202010705548 A CN 202010705548A CN 111809446 B CN111809446 B CN 111809446B
- Authority
- CN
- China
- Prior art keywords
- deacidification
- spray head
- spray
- screw rod
- spraying
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Links
- 238000005507 spraying Methods 0.000 title abstract description 26
- 239000007921 spray Substances 0.000 claims abstract description 69
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 17
- 239000003595 mist Substances 0.000 abstract description 8
- 238000000889 atomisation Methods 0.000 abstract description 4
- 238000000678 plasma activation Methods 0.000 description 13
- 239000002585 base Substances 0.000 description 9
- 238000005303 weighing Methods 0.000 description 7
- 230000003213 activating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000007171 acid catalysis Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/18—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00 of old paper as in books, documents, e.g. restoring
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Nozzles (AREA)
Abstract
The application provides a deacidification spraying device and a spray deacidification machine, wherein the deacidification spraying device comprises: the device comprises a slide rail, a screw rod sliding die penetrating through the screw rod, a spray head bracket, a deacidification spray head and a driving mechanism; the deacidification spray head is fixedly connected with the spray head support, and the driving mechanism can drive the deacidification spray head to swing left and right relative to the moving direction of the lead screw sliding die. The structure design effectively solves the problem of uneven fan-shaped spraying, ensures that the sprayed deacidification agent mist can be uniformly distributed on the surface of the to-be-deacidified object, and is very uniform in atomization.
Description
Technical Field
The application relates to the technical field of paper deacidification, in particular to a deacidification spraying device and a spray deacidification machine.
Background
China is a civilized ancient country with long history and brilliant culture, and various libraries, archives, museums and other units store tens of thousands of paper materials such as archives, books, calligraphy and painting, newspapers and the like. The paper materials are valuable cultural heritage of Chinese nationalities and have important historical cultural value which cannot be copied. Over time, under the influence of various factors, a large number of paper documents become increasingly acidic, cellulose macromolecular chains in paper hydrolyze or oxidize to small molecular chains under acid catalysis, the degree of polymerization decreases, and the stronger the acidity, the faster the hydrolysis speed, more acids are generated, and vicious circle is formed. Macroscopic appearance is that paper turns yellow, becomes brittle, and has reduced strength and is directly chalked, so that the protection of the cultural materials faces serious challenges.
The spray deacidification machine can prolong the preservation time of paper documents. The existing spray deacidification machines are more in types, but the deacidification spray heads cannot swing relatively to paper to be treated, the defects of uneven fan-shaped spraying exist due to the defects of the structure of the spray heads, sprayed mist particles are large and distributed in a fan shape, the mist quantity sprayed in the middle and at the edges of the paper surface is seriously uneven, and as a result, after deacidification of the paper, alkali residues in the middle part are obviously more, and the pH value is obviously higher. There is also present spraying deacidification machine to adopt the structure of many shower nozzles side by side, but can lead to the structure complicacy, for example CN 208104900U discloses a full-automatic paper spraying deacidification device, including the conveyer that is used for placing the paper, the conveyer top is equipped with atomizer, atomizer communicates with the liquid reserve tank through the driving pump, and the liquid reserve tank is used for depositing the deacidification agent, through the effect of driving pump, drives the deacidification agent and gets into atomizer and carries out spraying deacidification to the paper. In the technical scheme, the problem of uneven fan-shaped spraying exists in the overlapped area of the parallel multi-deacidification spray heads.
Disclosure of Invention
Based on the above, it is necessary to provide a deacidification spraying device and a spray deacidification machine aiming at the technical problem that the fan-shaped spray of the deacidification spray head is uneven.
A deacidification spray device comprising: the device comprises a slide rail, a screw rod sliding die penetrating through the screw rod, a spray head bracket, a deacidification spray head and a driving mechanism; the deacidification spray head is fixedly connected with the spray head support, and the driving mechanism can drive the deacidification spray head to swing left and right relative to the moving direction of the lead screw sliding die.
According to the technical scheme, the screw rod sliding die moves on the screw rod, and drives the deacidification spray head to move back and forth in the length direction of the to-be-deacidified object, so that deacidification agent spraying in the length direction is realized; the driving mechanism can drive the deacidification spray head to swing left and right relative to the moving direction of the screw rod sliding mode, so that the deacidification agent spray in the width direction is realized. Secondly, the structure design effectively solves the problem of uneven fan-shaped spraying, ensures that the sprayed deacidification agent mist can be uniformly distributed on the surface of the to-be-deacidified object, and is very uniform in atomization.
The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.
Optionally, the actuating mechanism includes pulley and the wave guide rail of parallel arrangement with the lead screw, the pulley sets up at shower nozzle support tip, the pulley offsets with the wave guide rail. When the screw rod sliding mould moves on the screw rod, the pulley is propped against the wave guide rail and slides along the track of the wave guide rail. The pulley is arranged at the end part of the spray head support, the spray head support is hinged to the screw rod sliding die, and finally the deacidification spray head swings left and right relative to the moving direction of the screw rod sliding die.
Optionally, a hinge part is arranged at the lower part of the screw rod sliding mode, and the middle part of the spray head bracket is hinged with the hinge part. The structure enables the two ends of the spray head support to swing left and right relative to the hinge part of the lower part of the screw rod sliding mode.
Optionally, the driving mechanism further comprises an extension spring that makes the pulley abut against the wave guide rail. The extension spring ensures that the pulley always keeps against the wave guide rail when sliding along the track of the wave guide rail, and further ensures that the sprayed deacidification agent mist can be uniformly distributed on the surface of the to-be-deacidified product.
Optionally, one end of the extension spring is connected with the spray head support, and the other end is connected with the screw rod sliding mode.
Optionally, the deacidification spray head is an ultrasonic spray head or a compressed air spray head.
Optionally, a single-head or multi-head spray nozzle is arranged on the nozzle bracket.
The application also provides a spray deacidification machine which comprises a bottom plate for placing the to-be-deacidified substances and a deacidification spray device, wherein the deacidification spray device is as described above.
Optionally, the spray deacidification machine comprises a weighing device, and the bottom plate is detachably arranged on the weighing device. The structural design can realize real-time monitoring of the effective application amount of the deacidification agent and accurate deacidification. The bottom plate detachably places on weighing device, can realize that many bottom plates are put into the studio in turn, raises the efficiency, realizes semi-continuous batch deacidification.
Optionally, the spray deacidification machine comprises a plasma activation device and a moving mechanism for driving the plasma activation device to move above the bottom plate. The plasma activation device can activate the to-be-deacidified substances and improve the deacidification effect.
Optionally, the moving mechanism includes a first moving mechanism driving the plasma activation device to move above the base plate along the X-axis direction of the base plate and a second moving mechanism driving the plasma activation device to move above the base plate along the Y-axis direction of the base plate.
Optionally, the spray deacidification machine comprises a closed working chamber, and the bottom plate and the deacidification spray device are arranged in the closed working chamber. The adoption of the closed structure is green and environment-friendly, and has small influence on human health.
Optionally, an exhaust gas treatment device is arranged on the closed working chamber. After the deacidification spraying is finished, the tail gas treatment device is used for discharging the inside deacidification agent gas in time.
The application has the following technical effects:
(1) The deacidification spraying device effectively solves the problem of uneven fan-shaped spraying, ensures that sprayed deacidification agent mist can be uniformly distributed on the surface of the to-be-deacidified object, and has very uniform atomization.
(2) According to the spray deacidification machine, the bottom plates are detachably arranged on the weighing device, so that the multi-bottom plates can be alternately arranged in the working chamber, the efficiency is improved, and the semi-continuous batch deacidification is realized.
(3) The spray deacidification machine adopts a closed structure and is provided with the tail gas treatment device, so that the spray deacidification machine is green and environment-friendly, and has small influence on human health.
Drawings
FIG. 1 is a schematic diagram of a deacidification spray device in an embodiment;
FIG. 2 is a schematic diagram of a spray deacidification machine in an embodiment;
fig. 3 is a schematic structural view of a plasma activation device and a moving mechanism thereof according to an embodiment.
Wherein, 1, deacidifying the spraying device; 101. a screw rod sliding mode; 102. a slide rail; 103. a screw rod; 104. a spray head bracket; 105. deacidifying spray heads; 106. a hinge part; 107. a wave guide rail; 108. pulleys, 109, extension springs; 110. a stepping motor; 2. a bottom plate; 3. a weighing device; 4. a plasma activation device; 401. a plasma activation shower head; 402. a mounting frame; 5. a tail gas treatment device; 6. a closed working chamber; 7. a moving mechanism; 701. a first slide rail; 702. a first screw rod; 703. a first slip form; 704. a second slide rail; 705. a second screw rod; 706. a second slip form; 707. and a second stepper motor.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
For a better description and illustration of embodiments of the application, reference should be made to one or more of the accompanying drawings, but the additional details or examples used to describe the drawings should not be construed as limiting the scope of any of the inventive, presently described embodiments or preferred modes of carrying out the application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
As shown in fig. 1, the deacidification spray device 1 includes: slide rail 102, lead screw 103, wear to establish lead screw slipform 101, shower nozzle support 104, deacidification shower nozzle 105 and actuating mechanism on lead screw 103.
The slide rail 102 is a linear slide rail, and the top of the screw rod sliding die 101 is in sliding connection with the slide rail 102. The screw rod sliding mode 101 is arranged on the screw rod 103 in a penetrating mode, and the screw rod 103 and the sliding rail 102 are arranged in parallel. The stepper motor 110 is arranged at the end of the screw 103, drives the screw 103 to rotate and drives the screw sliding die 101 to move back and forth in the length direction of the screw 103. The lower part of the screw rod sliding die 101 is fixedly connected with a hinge part 106, the nozzle bracket 104 is hinged on the hinge part 106 of the screw rod sliding die 101, the middle part of the nozzle bracket 104 is hinged with the hinge part 106, and the structure enables the two ends of the nozzle bracket 104 to swing left and right relative to the hinge part 106 at the lower part of the screw rod sliding die 101.
The deacidification nozzle 105 is fixedly connected with the nozzle bracket 104. The deacidification spray head 105 may be selected from an ultrasonic spray head or a compressed air spray head. In addition, the number of deacidification heads 105 may be increased or decreased according to actual requirements, for example, a single head or multiple heads may be used.
The driving mechanism comprises a pulley 108 and a wave guide rail 107, and the wave guide rail 107 is arranged in parallel with the screw 103. A pulley 108 is provided at the end of the nozzle holder 104, the pulley 108 being in abutment with the wave guide rail 107. When the screw slide 101 moves on the screw 103, the pulley 108 abuts against the wavy guide 107, and slides along the trajectory of the wavy guide 107. The pulley 108 is arranged at the end part of the nozzle bracket 104, the nozzle bracket 104 is hinged on the screw rod sliding die 101, and finally the deacidification nozzle 105 swings left and right relative to the moving direction of the screw rod sliding die 101.
The drive mechanism further comprises an extension spring 109 which urges the pulley 108 against the wave guide 107. The extension spring 109 ensures that the pulley 108 always keeps abutting against the wave guide rail 107 when sliding along the track of the wave guide rail 107, and further ensures that the sprayed deacidification agent mist can be uniformly distributed on the surface of the to-be-deacidified object. One end of the extension spring 109 is connected with the nozzle bracket 104, and the other end is connected with the screw rod sliding mode 101.
When the deacidification spraying device 1 works, the screw rod sliding die 101 moves on the screw rod 103, and the screw rod sliding die 101 drives the deacidification spray head 105 to move back and forth in the length direction of a to-be-deacidified object, so that deacidification agent spraying in the length direction is realized; the driving mechanism can drive the deacidification spray head 105 to swing left and right relative to the moving direction of the screw rod sliding mode 101, so that deacidification agent spraying in the width direction is realized. The structure design of the deacidification spraying device 1 effectively solves the problem of uneven fan-shaped spraying, ensures that the sprayed deacidification agent mist can be uniformly distributed on the surface of the to-be-deacidified product, and is very uniform in atomization.
As shown in fig. 2, the spray deacidification machine adopts a cabinet structure, and the upper part of the cabinet structure is a closed working chamber 6. The closed working chamber 6 is integrated with the deacidification spraying device 1, the plasma activating device 4, the moving mechanism 7 for driving the plasma activating device 4 to move above the bottom plate 2, the bottom plate 2 and the tail gas treatment device 5.
An exhaust gas treatment device 5 is arranged in the closed working chamber 6. After the deacidification spraying is finished, the residual deacidification agent gas in the interior can be discharged in time by using the tail gas treatment device 5.
The deacidification spraying device 1 is integrally arranged at the top of the closed working chamber 6 and sprays deacidification agent from top to bottom. The bottom plate 2 is placed in deacidification atomizer 1 lower part, is used for putting the deacidification thing of waiting on the bottom plate 2, and weighing device 3 is still installed to bottom plate 2 lower part, and this structural design can realize real-time supervision deacidification agent effectively applys volume, accurate deacidification. The bottom plate 2 is detachably placed on the weighing device 3, so that a plurality of bottom plates can be alternately placed in a working chamber, the efficiency is improved, and semi-continuous batch deacidification is realized.
The plasma activation device 4 and its moving mechanism 7 are hidden in the right body of the closed working chamber 6 when not in operation. In the working state, the plasma activating device 4 is driven by the moving mechanism 7 to move and scan the upper part of the bottom plate for activation.
As shown in fig. 3, the moving mechanism 7 includes a first moving mechanism that drives the plasma activation device 4 to move above the base plate 2 in the X-axis direction of the base plate 2 and a second moving mechanism that drives the plasma activation device 4 to move above the base plate 2 in the Y-axis direction of the base plate 2.
The first moving mechanism includes a first slide rail 701, a first screw 702, a first sliding mode 703, and a first stepping motor. The first slide rails 701 are provided in two on the left and right sides of the base plate 2. The left first sliding rail 701 is directly slidably connected to the first sliding die 703. The first sliding rail 701 on the right side is further provided with a first parallel screw rod 702, the first sliding mode 703 is arranged on the first screw rod 702 in a penetrating mode, and the first screw rod 702 is driven to rotate by the first stepping motor. The upper parts of the left and right first sliding molds 703 are fixedly connected with a second moving mechanism.
The second moving mechanism includes a second slide rail 704, a second screw 705, a second slip form 706, and a second stepper motor 707. The second sliding rails 704 are fixedly connected to the upper parts of the two first sliding molds 703, the second screw rods 705 are arranged above the second sliding rails 704 in parallel, the second sliding molds 706 are arranged on the second screw rods 705 in a penetrating mode, and the second stepping motor 707 drives the second screw rods 705 to rotate. The second slip form 706 is fixedly connected to the mounting frame 402 of the plasma activation showerhead 401, and the plasma activation showerhead 401 is mounted in the mounting frame 402.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (4)
1. A deacidification spray device, comprising: the device comprises a slide rail, a screw rod sliding die penetrating through the screw rod, a spray head bracket, a deacidification spray head and a driving mechanism; the deacidification spray head is fixedly connected with the spray head support, and the driving mechanism can drive the deacidification spray head to swing left and right relative to the moving direction of the lead screw sliding die;
the driving mechanism comprises a pulley and a wave guide rail which is arranged in parallel with the screw rod, the pulley is arranged at the end part of the spray head support, and the pulley abuts against the wave guide rail.
2. The deacidification spray device of claim 1, wherein the drive mechanism further comprises an extension spring that biases the pulley against the wave guide rail.
3. The deacidification spray device of claim 2, wherein the extension spring is connected to the spray head bracket at one end and to the lead screw slip form at one end.
4. A spray deacidification machine, which is characterized by comprising a bottom plate for placing the to-be-deacidified substances and a deacidified spray device, wherein the deacidified spray device is as claimed in any one of claims 1 to 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922266109 | 2019-12-17 | ||
| CN2019222661090 | 2019-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111809446A CN111809446A (en) | 2020-10-23 |
| CN111809446B true CN111809446B (en) | 2023-11-28 |
Family
ID=72861722
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010705548.1A Active CN111809446B (en) | 2019-12-17 | 2020-07-21 | Deacidification atomizer and spraying deacidification machine |
| CN202021452601.3U Withdrawn - After Issue CN212452098U (en) | 2019-12-17 | 2020-07-21 | Deacidification atomizer and spraying deacidification machine |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021452601.3U Withdrawn - After Issue CN212452098U (en) | 2019-12-17 | 2020-07-21 | Deacidification atomizer and spraying deacidification machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN111809446B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111809446B (en) * | 2019-12-17 | 2023-11-28 | 杭州众材科技股份有限公司 | Deacidification atomizer and spraying deacidification machine |
| CN113201969B (en) * | 2021-05-14 | 2022-10-11 | 杭州众材科技股份有限公司 | Intelligence paper deacidification system |
| CN115015340A (en) * | 2022-04-28 | 2022-09-06 | 杭州众材科技股份有限公司 | Paper waterless pH detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544299A (en) * | 2016-01-05 | 2016-05-04 | 南京博物院 | Paper document deacidification device and method |
| CN106861993A (en) * | 2017-04-07 | 2017-06-20 | 汪国栋 | A kind of computer cabinet antistatic backing spray equipment |
| CN106914365A (en) * | 2017-04-27 | 2017-07-04 | 济宁璟华环保科技有限公司 | Forging release agent sprayer and its spraying method |
| CN206721569U (en) * | 2017-04-24 | 2017-12-08 | 杭州众材科技有限公司 | A kind of box paper deacidification equipment |
| CN208104900U (en) * | 2018-03-29 | 2018-11-16 | 济南迈越信息科技有限公司 | A kind of automatic paper is sprayed deacidifying device |
| CN209076954U (en) * | 2018-10-17 | 2019-07-09 | 佛山市佳世达薄膜科技有限公司 | A kind of atomizing release film coating apparatus |
| CN110158358A (en) * | 2019-05-24 | 2019-08-23 | 四川锐立文物保护科技有限公司 | A kind of paper deacidification equipment |
| CN210585455U (en) * | 2019-09-18 | 2020-05-22 | 杭州崑鼎信息技术有限公司 | Oscillating removes shower nozzle mechanism |
| CN212452098U (en) * | 2019-12-17 | 2021-02-02 | 杭州众材科技有限公司 | Deacidification atomizer and spraying deacidification machine |
-
2020
- 2020-07-21 CN CN202010705548.1A patent/CN111809446B/en active Active
- 2020-07-21 CN CN202021452601.3U patent/CN212452098U/en not_active Withdrawn - After Issue
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544299A (en) * | 2016-01-05 | 2016-05-04 | 南京博物院 | Paper document deacidification device and method |
| CN106861993A (en) * | 2017-04-07 | 2017-06-20 | 汪国栋 | A kind of computer cabinet antistatic backing spray equipment |
| CN206721569U (en) * | 2017-04-24 | 2017-12-08 | 杭州众材科技有限公司 | A kind of box paper deacidification equipment |
| CN106914365A (en) * | 2017-04-27 | 2017-07-04 | 济宁璟华环保科技有限公司 | Forging release agent sprayer and its spraying method |
| CN208104900U (en) * | 2018-03-29 | 2018-11-16 | 济南迈越信息科技有限公司 | A kind of automatic paper is sprayed deacidifying device |
| CN209076954U (en) * | 2018-10-17 | 2019-07-09 | 佛山市佳世达薄膜科技有限公司 | A kind of atomizing release film coating apparatus |
| CN110158358A (en) * | 2019-05-24 | 2019-08-23 | 四川锐立文物保护科技有限公司 | A kind of paper deacidification equipment |
| CN210585455U (en) * | 2019-09-18 | 2020-05-22 | 杭州崑鼎信息技术有限公司 | Oscillating removes shower nozzle mechanism |
| CN212452098U (en) * | 2019-12-17 | 2021-02-02 | 杭州众材科技有限公司 | Deacidification atomizer and spraying deacidification machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN212452098U (en) | 2021-02-02 |
| CN111809446A (en) | 2020-10-23 |
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Address after: Room 101, West District, building a, 525 Xixi Road, Xihu District, Hangzhou City, Zhejiang Province Applicant after: Hangzhou Zhongcai Technology Co.,Ltd. Address before: Room 101, West District, building a, 525 Xixi Road, Xihu District, Hangzhou City, Zhejiang Province Applicant before: HANGZHOU ZHONGCAI TECHNOLOGY Co.,Ltd. |
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