CN111543738B - Preparation method of hot-melt harbour material synthesized by natural cassava - Google Patents
Preparation method of hot-melt harbour material synthesized by natural cassava Download PDFInfo
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- CN111543738B CN111543738B CN202010398172.4A CN202010398172A CN111543738B CN 111543738 B CN111543738 B CN 111543738B CN 202010398172 A CN202010398172 A CN 202010398172A CN 111543738 B CN111543738 B CN 111543738B
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- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 title claims abstract description 16
- 239000012943 hotmelt Substances 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 241000658379 Manihot esculenta subsp. esculenta Species 0.000 title 1
- 240000003183 Manihot esculenta Species 0.000 claims abstract description 48
- 239000000843 powder Substances 0.000 claims abstract description 45
- 239000004831 Hot glue Substances 0.000 claims abstract description 39
- 239000011812 mixed powder Substances 0.000 claims abstract description 32
- 229920002472 Starch Polymers 0.000 claims abstract description 28
- 239000008107 starch Substances 0.000 claims abstract description 28
- 235000019698 starch Nutrition 0.000 claims abstract description 28
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 24
- 239000011575 calcium Substances 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 239000003292 glue Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 13
- 230000004927 fusion Effects 0.000 claims abstract description 10
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims abstract description 8
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 8
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000002791 soaking Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000000376 reactant Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 230000000704 physical effect Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 4
- 239000000084 colloidal system Substances 0.000 abstract description 3
- 230000009982 effect on human Effects 0.000 abstract description 2
- 231100000957 no side effect Toxicity 0.000 abstract description 2
- 230000001988 toxicity Effects 0.000 abstract description 2
- 231100000419 toxicity Toxicity 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010985 leather Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000004899 motility Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920000881 Modified starch Polymers 0.000 description 2
- 239000004368 Modified starch Substances 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 235000019426 modified starch Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0205—Uppers; Boot legs characterised by the material
- A43B23/0235—Different layers of different material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Medicinal Preparation (AREA)
Abstract
The invention relates to a preparation method of a hot-melting port treasure material synthesized by natural cassava, which is prepared by the following steps: pouring the cassava starch into a dry powder stirrer, sealing and stirring for 9-11 minutes, and pouring the light calcium powder into the dry powder stirrer to seal and stir with the cassava starch to obtain mixed powder; pouring the thermoplastic polyurethane hot melt adhesive and the EVA colloidal particles into a glue mixer and stirring to obtain a mixed glue body; mixing the mixed powder and the mixed colloid at a constant speed, stirring, and standing; and finally, placing the non-woven fabric in a glue tank to soak the reaction body, and sequentially carrying out a conventional squeezing process, an initial setting process and a curing process to obtain the hot-melt Hongkong Bao tablet. Compared with the prior art, the hot-melting port treasure has the advantages of stable structure, good air permeability and elasticity, no need of hardening treatment, low production cost, no odor and toxicity, no side effect on human bodies and strong biodegradability by utilizing the fusion of the cassava starch and the hot melt adhesive.
Description
Technical Field
The invention relates to a preparation method of a hot-melting port treasure material, in particular to a preparation method of a hot-melting port treasure material prepared from natural cassava.
Background
China is the biggest sports shoe manufacturing base in the world, the development of the shoe manufacturing industry in China must move from low-end products to middle-end products, and the upgrading and updating of products are a necessary trend. With the continuous improvement of the living standard of people, more attention is paid to shoe products with environmental protection, energy conservation and higher added value.
The Hongbao is generally arranged between the fabric and the lining of the sports shoe, is used for shaping the shoe, and has the protection effects of collision prevention, shock absorption and the like on the half sole and the heel of the foot. The traditional Hongkong is made of leather pulp Hongkong and chemical piece Hongkong, wherein the leather pulp Hongkong is made of middle-bottom leather of cowhide, and the material is softened by soaking, so that the economic benefit is not met; the chemical piece Hongbao is characterized in that the chemical piece Hongbao can be very soft after being soaked in a solvent, is most beneficial to the forming of shoes, does not need to add or strengthen any treatment, and can achieve the effect of stiffness after being dried and cooled, but is thicker, long in forming time and poor in elasticity; however, the traditional leather pulp port and chemical piece port have many operation procedures, waste time and labor and do not accord with economic benefits; furthermore, toluene is not environment-friendly, is harmful to the body, has irritation to the skin and mucous membrane, and has an anesthetic effect on the central nervous system.
In view of the above, the present inventors have made intensive studies on the above problems, and have resulted in the present invention.
Disclosure of Invention
The invention aims to provide a preparation method of a hot-melting port treasure material synthesized by natural cassava, which has the advantages of stable structure, good air permeability and elasticity, no need of hardening treatment, low production cost, no odor and toxicity, no side effect on human body and strong biodegradability.
A preparation method of a hot-melt port treasure material synthesized by natural cassava comprises the following steps:
the method comprises the following steps: pouring 50 parts by weight of cassava starch which is processed into starch and then dehydrated and dried into a dry powder stirrer, and stirring for 9-11 minutes in a sealed manner to obtain slightly-heated cassava starch;
step two: pouring 10 parts by weight of light calcium powder with the fineness of 950-;
step three: pouring 30 parts by weight of thermoplastic polyurethane hot melt adhesive and 10 parts by weight of thermoplastic elastomer EVA colloidal particles into a glue mixer, and stirring for 9-11 minutes to obtain a glue mixture; the cassava starch obtained by dehydration and drying after being processed into starch in the step one, the light calcium powder with the fineness of 950-1050 meshes in the step two, the thermoplastic polyurethane hot melt adhesive in the step three and the thermoplastic elastomer EVA colloidal particles in the step three account for 100 parts by total weight;
step four: pouring the mixed powder in the step two into the glue mixer in the step three, mixing and stirring the mixed powder and the glue body in the step three at a constant speed for 28-35 minutes, wherein the stirring speed is 10 revolutions per minute, standing for 110-150 minutes after stirring, and standing to obtain a reaction body;
step five: and (4) putting the reactant obtained in the step four into a glue tank, putting the non-woven fabric into the glue tank, soaking the non-woven fabric and the reactant, and sequentially performing a conventional squeezing process, an initial setting process and a curing process after soaking to obtain the hot-melt Hongkong tablet.
According to the preparation method of the hot-melting port material synthesized by natural cassava, the pH value of the cassava starch is stable by utilizing the fusion of the light calcium powder, the viscosity of the cassava starch is ensured, and the light calcium powder enables the whole hot-melting port material to have higher tensile strength, tearing strength and wear resistance under the action of the hot melt adhesive; the expansion of the mixed powder in the heating process can be inhibited by hot melt adhesive in the mixing and stirring of the mixed powder and the hot melt adhesive, meanwhile, the periphery of the cassava powder particles is surrounded by the hot melt adhesive, so that the steric hindrance is formed, the mixed powder particles are uniformly dispersed and have good compatibility, the temperature of the mixed powder is raised by utilizing the water absorption of the hot melt adhesive, and the fusion stability is obviously improved; the addition of the hot melt adhesive reduces the motility of chain segments in the whole fusing system, and the linear chain mixture powder leakage is reduced along with the increase of the proportion of the hot melt adhesive, so that the structure of the compound fusing body of the cassava powder, the calcium powder mixture and the hot melt adhesive is stable, the air permeability and the elasticity of the hot melt port treasure sheet are better by utilizing the characteristics of the hot melt adhesive, the hardness can be adjusted according to the production requirements of customers, the shaping effect is improved, and no hardening treatment is needed; and the biodegradability of cassava modified starch is utilized, so that the hot-melting harbor tablets are degraded, the environment is protected, and the whole production cost is greatly reduced.
Detailed Description
The invention relates to a preparation method of a hot-melting port treasure material synthesized by natural cassava, which comprises the following steps:
the method comprises the following steps: pouring 50 parts by weight of cassava starch which is processed into starch and then dehydrated and dried into a dry powder stirrer, and stirring for 9-11 minutes in a sealed manner to obtain slightly-heated cassava starch; in the step, the cassava starch can slightly heat to emit moisture, and the condition of laying the cassava starch in a dissolving way with the calcium powder is adopted;
step two: pouring 10 parts by weight of light calcium powder with the fineness of 950-; in the step, the light calcium powder is preferably 1000 meshes, the calcium powder is used as an auxiliary material of a fusion body, the calcium powder is the best auxiliary material for promoting the fusion, and the natural light calcium powder is a compound with a chemical formula of CaCO3 and is alkaline; the balance of the pH value of the mixed powder is promoted by the conduction of the light calcium powder and the cassava starch through slight heat, and the viscosity of the cassava powder in the mixed powder is stable due to the physical property that the viscosity of the cassava powder is reduced along with the reduction of the pH value and is slightly increased along with the increase of the pH value;
step three: pouring 30 parts by weight of thermoplastic polyurethane hot melt adhesive and 10 parts by weight of thermoplastic elastomer EVA colloidal particles into a glue mixer, and stirring for 9-11 minutes to obtain a glue mixture; the cassava starch obtained by dehydration and drying after being processed into starch in the step one, the light calcium powder with the fineness of 950-1050 meshes in the step two, the thermoplastic polyurethane hot melt adhesive in the step three and the thermoplastic elastomer EVA colloidal particles in the step three account for 100 parts by total weight; the thermoplastic elastomer EVA colloidal particles are common EVA colloidal particles on the market, and the mixed colloid obtained by the thermoplastic polyurethane hot melt adhesive and the thermoplastic elastomer EVA colloidal particles is the main forming principle of the hot melt port treasure and is the prior known technology;
step four: pouring the mixed powder in the step two into the glue mixer in the step three, mixing and stirring the mixed powder and the glue body in the step three at a constant speed for 28-35 minutes, wherein the stirring speed is 10 revolutions per minute, standing for 110-150 minutes after stirring, and standing to obtain a reaction body; the step is preferably carried out by stirring for 30 minutes and standing for 120 minutes; in this step the mixed powder and the mixed colloid can be obtained to be mixed;
step five: putting the reaction body obtained in the fourth step into a glue tank, putting the non-woven fabric into the glue tank to be soaked with the reaction body, and sequentially performing conventional squeezing, primary setting, tentering, curing and setting and cold curing setting after soaking to obtain the hot-melt Hongkong tablet; the soaking, pressing, primary shaping, tentering, curing and cold curing are conventional steps in the production of the existing hot-melt Hongkong tablet, and are not described herein again.
According to the preparation method of the hot-melt port treasure material synthesized by natural cassava, the change of the form of a compound system of the cassava powder, the calcium powder mixed powder and the hot melt adhesive in the process of dissolving can be observed by an optical microscope (LM) and a Scanning Electron Microscope (SEM) in the manufacturing process, the compound powder of the cassava powder and the calcium powder and the mixed adhesive can be obtained by observing, the compound of the cassava powder, the calcium powder mixed powder and the hot melt adhesive is a process of interacting with water, and the proton spin-spin relaxation time (T2) is measured by a nuclear magnetic resonance spectrometer (NMR) to reflect the influence of the mixed powder and the hot melt adhesive on the water mobility in the process of dissolving the system; the content of the leaked straight-chain mixture is measured to reflect the influence of the hot melt adhesive on the motility of chain segments in the fusion process of the mixed powder, so that the fusion mechanism of the mixed powder in a continuous phase system of the hot melt adhesive is obtained, and test results show that the hot melt adhesive can inhibit the expansion of the cassava mixed powder in the heating process to a certain extent, and meanwhile, the hot melt adhesive is wrapped around cassava powder particles and has good compatibility; the difference of proton spin-spin relaxation time (T2) in the heating process reflects the change of water distribution and combination degree in the fusion process, the temperature of the mixed powder is increased due to the water absorption and wrapping effect of the hot melt adhesive, the fusion stability is improved, the inflection point of the rising after the falling of T2 is shown, and the temperature is increased from 50 ℃ to 60 ℃ and T2 with the higher temperature of 95 ℃.
According to the preparation method of the hot-melting port treasure material synthesized by natural cassava, the pH value of the cassava starch is stable by utilizing the fusion of the light calcium powder, the viscosity of the cassava starch is ensured, and the light calcium powder enables the whole hot-melting port treasure sheet to have higher tensile strength, tearing strength and wear resistance under the action of the hot melt adhesive; the expansion of the mixed powder in the heating process can be inhibited by hot melt adhesive in the mixing and stirring of the mixed powder and the hot melt adhesive, meanwhile, the periphery of the cassava powder particles is surrounded by the hot melt adhesive, so that the steric hindrance is formed, the mixed powder particles are uniformly dispersed and have good compatibility, the temperature of the mixed powder is raised by utilizing the water absorption of the hot melt adhesive, and the fusion stability is obviously improved; the addition of the hot melt adhesive reduces the motility of chain segments in the whole fusing system, and the linear chain mixture powder leakage is reduced along with the increase of the proportion of the hot melt adhesive, so that the structure of the compound fusing body of the cassava powder, the calcium powder mixture and the hot melt adhesive is stable, the air permeability and the elasticity of the hot melt port treasure sheet are better by utilizing the characteristics of the hot melt adhesive, the hardness can be adjusted according to the production requirements of customers, the shaping effect is improved, and no hardening treatment is needed; and the biodegradability of cassava modified starch is utilized, so that the hot-melting harbor tablets are degraded, the environment is protected, and the whole production cost is greatly reduced.
The above embodiments are not intended to limit the scope of the present invention, and any suitable changes or modifications made by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (1)
1. A preparation method of a hot-melt port treasure material synthesized by natural cassava is characterized by comprising the following steps: the preparation method comprises the following steps: the method comprises the following steps: pouring 50 parts by weight of cassava starch which is processed into starch and then dehydrated and dried into a dry powder stirrer, and stirring for 9-11 minutes in a sealed manner to obtain slightly-heated cassava starch; in the step, the cassava starch can slightly heat to emit moisture, and the condition of laying the cassava starch in a dissolving way with the calcium powder is adopted; step two: pouring 10 parts by weight of light calcium powder with the fineness of 950-; the balance of the pH value of the mixed powder is promoted by the conduction of the light calcium powder and the cassava starch through slight heat, and the viscosity of the cassava powder in the mixed powder is stable due to the physical property that the viscosity of the cassava powder is reduced along with the reduction of the pH value and is slightly increased along with the increase of the pH value; step three: pouring 30 parts by weight of thermoplastic polyurethane hot melt adhesive and 10 parts by weight of thermoplastic elastomer EVA colloidal particles into a glue mixer, and stirring for 9-11 minutes to obtain a glue mixture; the cassava starch obtained by dehydration and drying after being processed into starch in the step one, the light calcium powder with the fineness of 950-1050 meshes in the step two, the thermoplastic polyurethane hot melt adhesive in the step three and the thermoplastic elastomer EVA colloidal particles in the step three account for 100 parts by total weight; step four: pouring the mixed powder in the step two into the glue mixer in the step three, mixing and stirring the mixed powder and the glue body in the step three at a constant speed for 28-35 minutes, wherein the stirring speed is 10 revolutions per minute, standing for 110-150 minutes after stirring, and standing to obtain a reaction body; step five: putting the reactant obtained in the step four into a glue tank, putting the non-woven fabric into the glue tank to be soaked with the reactant, and sequentially performing a conventional squeezing process, an initial setting process and a curing process after soaking to obtain the hot-melt Hongkong tablet; the hot melt adhesive in the mixing and stirring of the mixed powder and the hot melt adhesive can inhibit the expansion of the mixed powder in the temperature rising process, meanwhile, the hot melt adhesive surrounds the cassava powder particles, the steric hindrance is formed, so that the mixed powder particles are uniformly dispersed, the good compatibility is realized, the water absorption of the hot melt adhesive is reused, the temperature of the mixed powder is raised, and the fusion stability is obviously improved.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020101174190 | 2020-02-25 | ||
| CN202010117419 | 2020-02-25 |
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| Publication Number | Publication Date |
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| CN111543738A CN111543738A (en) | 2020-08-18 |
| CN111543738B true CN111543738B (en) | 2022-03-18 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618212A (en) * | 2012-04-13 | 2012-08-01 | 佛山南宝高盛高新材料有限公司 | Hot melt adhesive and preparation process and application thereof |
| CN103613919A (en) * | 2013-11-20 | 2014-03-05 | 南京诚盟机械有限公司 | Shoe material hot-melt adhesive sheet and production process and equipment thereof |
| CN109363296A (en) * | 2018-11-16 | 2019-02-22 | 浙江飞越新材料有限公司 | A kind of hot melt adhesive port is precious and its production method |
-
2020
- 2020-05-12 CN CN202010398172.4A patent/CN111543738B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618212A (en) * | 2012-04-13 | 2012-08-01 | 佛山南宝高盛高新材料有限公司 | Hot melt adhesive and preparation process and application thereof |
| CN103613919A (en) * | 2013-11-20 | 2014-03-05 | 南京诚盟机械有限公司 | Shoe material hot-melt adhesive sheet and production process and equipment thereof |
| CN109363296A (en) * | 2018-11-16 | 2019-02-22 | 浙江飞越新材料有限公司 | A kind of hot melt adhesive port is precious and its production method |
Non-Patent Citations (2)
| Title |
|---|
| 张美洁, 李树材;张美洁, 李树材;《塑料科技》;20021006;第60页第6段 * |
| 改性纳米碳酸钙对淀粉胶粘剂剪切强度的影响;邓丽娟，李志成，程 昊，黄文艺;《新材料与新技术》;20160428;第52页第2段 * |
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Denomination of invention: A Method for Preparing Hot Melt Port Treasure Materials Synthesized from Natural Cassava Effective date of registration: 20230329 Granted publication date: 20220318 Pledgee: Zhejiang Hangzhou Yuhang Rural Commercial Bank Co.,Ltd. Pingyao Branch Pledgor: HANGZHOU KAIYUE NEW MATERIAL Co.,Ltd. Registration number: Y2023980036521 |
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Granted publication date: 20220318 Pledgee: Zhejiang Hangzhou Yuhang Rural Commercial Bank Co.,Ltd. Pingyao Branch Pledgor: HANGZHOU KAIYUE NEW MATERIAL Co.,Ltd. Registration number: Y2023980036521 |
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Denomination of invention: Preparation method of hot melt harbor treasure material synthesized from natural cassava Granted publication date: 20220318 Pledgee: Zhejiang Hangzhou Yuhang Rural Commercial Bank Co.,Ltd. Pingyao Branch Pledgor: HANGZHOU KAIYUE NEW MATERIAL Co.,Ltd. Registration number: Y2024980036807 |