CN104962167A - High-temperature-resistant insulating paint and preparation method thereof - Google Patents
High-temperature-resistant insulating paint and preparation method thereof Download PDFInfo
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- CN104962167A CN104962167A CN201510339641.4A CN201510339641A CN104962167A CN 104962167 A CN104962167 A CN 104962167A CN 201510339641 A CN201510339641 A CN 201510339641A CN 104962167 A CN104962167 A CN 104962167A
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- temperature insulation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/308—Wires with resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides high-temperature-resistant insulating paint and a preparation method thereof. The high-temperature-resistant insulating paint consists of, by weight: 40-50 parts of poly-phthalimide and/or polyester modified epoxy resin, 20-30 parts of diluent, 5-20 parts of curing agent, 3-5 parts of dispersing agent and 5-10 parts of coupling agent, wherein the diluent is a mixture of acrylic resin and dichloroethane; and the dispersing agent consists of BY-K370 type wetting dispersant, molybdenum disulfide and graphite. The formula of the high-temperature-resistant insulating paint is scientific and reasonable; the preparation method is simple and practicable; excellent high temperature resistance and excellent insulating performance of the high-temperature-resistant insulating paint are guaranteed; increasing environmental protection requirements are met; and moreover, the high-temperature-resistant insulating paint has corona resistance.
Description
Technical field
The present invention relates to insullac technology, particularly relate to a kind of high-temperature insulating paint and preparation method thereof.
Background technology
Fire resistant anticorrosive paint generally refers to more than 200 DEG C, paint film nondiscoloration, does not come off, and still can keep the coating of suitable physical and mechanical properties.Be widely used in the coating protection of the chimney in high temperature position, smoke discharging pipe, High Temperature Furnaces Heating Apparatus, petroleum cracking conversion unit and aircraft, guided missile, aerospace equipment etc.The Insulation Problems of high voltage electric parts is the important component part of high voltage electric product reliability research always.High voltage electric parts are faced with the severe space environment of the various complexity such as high/low temperature alternation, thermovacuum, vibration in application process.The many factors of impact to voltage electricity product insulating property, comprises the characteristic etc. of the physicals of device itself, insulating structure design and insulating material.Wherein, the physical and chemical performance of insulating material is one of principal element of impact to voltage electricity product insulating reliability.
The VPI impregnated insulating paint of current high-voltage motor field application is mostly polyester system, the polyester modified epoxy resin system that vinylbenzene or Vinyl toluene are thinner, also has the epoxy anhydride system of relatively environmental protection.But vinylbenzene vapour pressure is at normal temperatures about 853Pa, high volatility, at dipping lacquer and to cure in process and can release by scent of, not only cause waste, and have larger harm to operator and surrounding environment.In VPI technique, because the saturation vapour pressure of vinylbenzene own is higher, when vacuum tightness is higher, when absolute pressure is less than 800 Pa, insullac there will be a lot of foam, and simultaneously liquid level produces a large amount of fog, thus cause in insulation system, occurring air gap, fill not full.Vinylbenzene flash-point only has 34.4 DEG C in addition, and the workpiece after dipping lacquer cures in process easily blasts, and produces cause serious harm to industrial safety.Although Vinyl toluene boiling point is higher, toxicity is also lower, and Vinyl toluene smell is comparatively large, and has explosiveness, still has considerable influence to operator and environment, does not thoroughly solve feature of environmental protection problem
Along with the development of industry, also can be more and more higher to the heat resistant requirements of insullac and coating, the high-temperature insulating paint adopted at present and coating variety oneself can not satisfy the demands.Therefore, development of new high-temperature insulating paint and coating are necessary completely, and have profound significance.
Summary of the invention
The object of the invention is to, exist with degree environmental issue for existing insullac, propose a kind of high-temperature insulation paint, meet growing environmental requirement, while ensureing excellent high temperature resistant and insulating property, also there is the performance of Inverter fed motor.
For achieving the above object, the technical solution used in the present invention is: a kind of high-temperature insulation paint, and each component following by weight proportion forms:
Poly-phthalimide and or polyester modified epoxy resin 40-50 part;
Thinner 20-30 part;
Solidifying agent 5-20 part;
Dispersion agent 3-5 part;
Coupling agent 5-10 part;
Wherein, described thinner is the mixture of acrylic resin and ethylene dichloride;
Described dispersion agent is made up of BY-K370 type wetting dispersing agent, curing aluminium and graphite, and described BY-K370 type wetting dispersing agent introduces the dispersing property being conducive to improving color stuffing; The compound use of curing aluminium and graphite is conducive to the gloss improving coating.Adding suitable dispersion agent can make coating form stable dispersion, improves the application property of coating and improves the performance of film.
Further, described high-temperature insulation paint, each component following by weight proportion forms:
Poly-phthalimide and polyester modified epoxy resin 40-50 part;
Thinner 20-30 part;
Solidifying agent 5-10 part;
Dispersion agent 4-5 part;
Coupling agent 5-10 part;
Wherein, described thinner is weight proportion is the acrylic resin of 1:1 and the mixture of ethylene dichloride;
Described dispersion agent is made up of BY-K370 type wetting dispersing agent, curing aluminium and graphite, and its weight proportion is 2:2:5.
Further, the mol ratio of described poly-phthalimide and polyester modified epoxy resin is 1:2-5.
Further, described acrylic resin is low-molecular-weight acrylic resin.
Further, described solidifying agent is latent epoxy resin curing agent.
Further, described coupling agent is dehydration glycerine propyl ether Trimethoxy silane, described coupling agent can improve the wettability of resin to inorganics, improve the consistency of resin and inorganics, chemical bond is formed between resin and inorganics, thus improve the interface adhesion of storeroom, the performance of material under raising wet environment.Clean metal base surface easily adsorbs last layer moisture film in the environment, makes hydrophobic base-material be difficult to soak it.Add a small amount of silane coupling agent in coating after, silane can move to the interface of coating and base material, with the reaction of moisture on surface, is hydrolyzed into silanol base, so with the forming hydrogen bond through base or condensation occur of substrate surface.Meanwhile, condensation mutually, oligomerisation form cancellated film and cover substrate surface each intermolecular silanol base of silane again.In addition, organo silane coupling agent can also react with the organic constituent in coating and form chemical bond or Van der Waals force, thus completes the coupling between two kinds of chemical property differing materials.Silane coupling agent is exactly by this chemical reaction or physical action, forms molecular bridge, the two is adhered to each other securely between the high molecular polymer and inorganic low material of original inertia mutually.In coating, the major function of silane coupling agent is the auxiliary agent as strengthening sticking power, and it can strengthen the initial adhesion of coating to various metallic surface very significantly, and the sticking power under water logging and other severe condition.
Further, described high-temperature insulation paint also comprises the aluminum oxide that weight part is 3-9 part, adding of described aluminum oxide makes the dielectric loss of paint film raise gradually, and the Inverter fed motor time of Inverter fed motor time more former paint improves a lot, and reaches the object improving high-temperature insulating paint corona-resistance property.
Further, described high-temperature insulation paint also comprises the pigment that weight part is 5-10 part.
The invention also discloses a kind of preparation method of above-mentioned high-temperature insulation paint, comprise the following steps: take raw material by weight ratio, poly-phthalimide and polyester modified epoxy resin are heated to 90 ~ 100 DEG C, add thinner while stirring, adjusting to viscosity is 80 ~ 120 s, add solidifying agent, dispersion agent and coupling agent after being cooled to 60 ~ 65 DEG C, raw material stirring is evenly obtained high-temperature insulation paint.
Further, aluminum oxide and pigment is added after being cooled to 60 ~ 65 DEG C.
High-temperature insulating paint scientific formulation of the present invention, rationally, its preparation method is simple, easy, has the following advantages compared with prior art:
(1) high-temperature insulating paint of the present invention has excellent physicals after testing, and its volume specific resistance (Ω m) normality is 1.05 × 10
14, immersion 24h is 7.68 × 10
13; Under room temperature, in water, 168 h postadhesion power are that at 100/100,300 DEG C, lh postadhesion power is 100/100, are suitable for pre-coated metal.The performance of insullac is tested according to GB/T 15022.2-2007 " electric insulation solventless polymerisable resinous compound test method " and GB/T1981.2-2009 " electric insulation lacquer test method ".
(2) the solidification fugitive constituent of more polystyrene systems, Vinyl toluene (VT) system and the obtained non-volatile High-Voltage Insulation paint of single-component epoxy is applied in more current high-voltage motor field, the solidification fugitive constituent of vinylbenzene or VT system High-Voltage Insulation paint is all larger, all more than 10%, polystyrene systems is even close to 20%.And the fugitive constituent of high-temperature insulating paint of the present invention is much smaller than the fugitive constituent of above two kinds of systems, VOC burst size is lower, is conducive to the electrical strength and the mechanical property that improve insulation system.
Embodiment
Below in conjunction with embodiment, the present invention is further described:
Embodiment 1
Present embodiment discloses a kind of high-temperature insulation paint, each component following by weight proportion forms:
Poly-phthalimide and polyester modified epoxy resin 50 parts;
Thinner 25 parts;
10 parts, solidifying agent;
Dispersion agent 3 parts;
Coupling agent 5 parts;
Pigment 10 parts.
Wherein, described thinner is weight proportion is the acrylic resin of 1:1 and the mixture of ethylene dichloride;
Described dispersion agent is made up of BY-K370 type wetting dispersing agent, curing aluminium and graphite, and its weight proportion is 2:2:5.
The mol ratio of described poly-phthalimide and polyester modified epoxy resin is 1:3.
Described acrylic resin is low-molecular-weight acrylic resin.
Described solidifying agent is latent epoxy resin curing agent.
Described coupling agent is dehydration glycerine propyl ether Trimethoxy silane, described coupling agent can improve the wettability of resin to inorganics, improve the consistency of resin and inorganics, chemical bond is formed between resin and inorganics, thus improve the interface adhesion of storeroom, the performance of material under raising wet environment.
The invention also discloses a kind of preparation method of above-mentioned high-temperature insulation paint, comprise the following steps: take raw material by weight ratio, poly-phthalimide and polyester modified epoxy resin are heated to 90 ~ 100 DEG C, add thinner while stirring, adjusting to viscosity is 80 ~ 120s, add pigment, solidifying agent, dispersion agent and coupling agent after being cooled to 60 ~ 65 DEG C, raw material stirring is evenly obtained high-temperature insulation paint.
Described in the present embodiment, its volume specific resistance of high-temperature insulation paint (Ω m) normality is 1.05 × 10
14, immersion 24h is 8.00 × 10
13.The weightless temperature of 10% is 420 DEG C.
Embodiment 2
Present embodiment discloses a kind of high-temperature insulation paint, each component following by weight proportion forms:
Polyester modified epoxy resin 40 parts;
Thinner 28 parts;
10 parts, solidifying agent;
Dispersion agent 5 parts;
Coupling agent 5 parts.
Wherein, described thinner is weight proportion is the acrylic resin of 1:1 and the mixture of ethylene dichloride;
Described dispersion agent is made up of BY-K370 type wetting dispersing agent, curing aluminium and graphite, and its weight proportion is 2:2:5.
Described acrylic resin is low-molecular-weight acrylic resin.
Described solidifying agent is latent epoxy resin curing agent.
Described coupling agent is dehydration glycerine propyl ether Trimethoxy silane, described coupling agent can improve the wettability of resin to inorganics, improve the consistency of resin and inorganics, chemical bond is formed between resin and inorganics, thus improve the interface adhesion of storeroom, the performance of material under raising wet environment.
The invention also discloses a kind of preparation method of above-mentioned high-temperature insulation paint, comprise the following steps: take raw material by weight ratio, poly-phthalimide and polyester modified epoxy resin are heated to 100 DEG C, add thinner while stirring, adjusting to viscosity is 100s, add solidifying agent, dispersion agent and coupling agent after being cooled to 60 ~ 65 DEG C, raw material stirring is evenly obtained high-temperature insulation paint.
Described in the present embodiment, its volume specific resistance of high-temperature insulation paint (Ω m) normality is 1.2 × 10
14, immersion 24h is 9.00 × 10
13.The weightless temperature of 10% is 450 DEG C.
Embodiment 3
Present embodiment discloses a kind of high-temperature insulation paint, each component following by weight proportion forms:
Poly-phthalimide and polyester modified epoxy resin 50 parts;
Thinner 25 parts;
10 parts, solidifying agent;
Dispersion agent 3 parts;
Coupling agent 5 parts;
Pigment 10 parts;
5 parts, aluminum oxide.
Wherein, described thinner is weight proportion is the acrylic resin of 1:1 and the mixture of ethylene dichloride;
Described dispersion agent is made up of BY-K370 type wetting dispersing agent, curing aluminium and graphite, and its weight proportion is 2:2:5.
The mol ratio of described poly-phthalimide and polyester modified epoxy resin is 1:2-5.
Described acrylic resin is low-molecular-weight acrylic resin.
Described solidifying agent is latent epoxy resin curing agent.
Described coupling agent is dehydration glycerine propyl ether Trimethoxy silane, described coupling agent can improve the wettability of resin to inorganics, improve the consistency of resin and inorganics, chemical bond is formed between resin and inorganics, thus improve the interface adhesion of storeroom, the performance of material under raising wet environment.
The invention also discloses a kind of preparation method of above-mentioned high-temperature insulation paint, comprise the following steps: take raw material by weight ratio, poly-phthalimide and polyester modified epoxy resin are heated to 90 ~ 100 DEG C, add thinner while stirring, adjusting to viscosity is 80 ~ 120 s, add aluminum oxide, pigment, solidifying agent, dispersion agent and coupling agent after being cooled to 60 ~ 65 DEG C, raw material stirring is evenly obtained high-temperature insulation paint.
Described in the present embodiment, its volume specific resistance of high-temperature insulation paint (Ω m) normality is 1.3 × 10
14, immersion 24h is 7.00 × 10
13.The weightless temperature of 10% is 380 DEG C.
The present invention is not limited to high-temperature insulating paint described in above-described embodiment and preparation method thereof, and wherein the change of each material proportion is all within protection scope of the present invention.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a high-temperature insulation paint, is characterized in that, each component following by weight proportion forms:
Poly-phthalimide and or polyester modified epoxy resin 40-50 part;
Thinner 20-30 part;
Solidifying agent 5-20 part;
Dispersion agent 3-5 part;
Coupling agent 5-10 part;
Wherein, described thinner is the mixture of acrylic resin and ethylene dichloride;
Described dispersion agent is made up of BY-K370 type wetting dispersing agent, curing aluminium and graphite.
2. high-temperature insulation paint according to claim 1, it is characterized in that, each component following by weight proportion forms:
Poly-phthalimide and polyester modified epoxy resin 40-50 part;
Thinner 20-30 part;
Solidifying agent 5-10 part;
Dispersion agent 4-5 part;
Coupling agent 5-10 part;
Wherein, described thinner is weight proportion is the acrylic resin of 1:1 and the mixture of ethylene dichloride;
Described dispersion agent is made up of BY-K370 type wetting dispersing agent, curing aluminium and graphite, and its weight proportion is 2:2:5.
3. high-temperature insulation paint according to claim 1 or 2, is characterized in that, the mol ratio of described poly-phthalimide and polyester modified epoxy resin is 1:2-5.
4. high-temperature insulation paint according to claim 1 or 2, is characterized in that, described acrylic resin is low-molecular-weight acrylic resin.
5. high-temperature insulation paint according to claim 1 or 2, is characterized in that, described solidifying agent is latent epoxy resin curing agent.
6. high-temperature insulation paint according to claim 1 or 2, is characterized in that, described coupling agent is dehydration glycerine propyl ether Trimethoxy silane.
7. high-temperature insulation paint according to claim 1 or 2, is characterized in that, described high-temperature insulation paint also comprises the aluminum oxide that weight part is 3-9 part.
8. high-temperature insulation paint according to claim 1 or 2, is characterized in that, described high-temperature insulation paint also comprises the pigment that weight part is 5-10 part.
9. the preparation method of high-temperature insulation paint described in a claim 1-8 any one, it is characterized in that, comprise the following steps: take raw material by weight ratio, poly-phthalimide and polyester modified epoxy resin are heated to 90 ~ 100 DEG C, add thinner while stirring, adjusting to viscosity is 80 ~ 120 s, adds solidifying agent, dispersion agent and coupling agent after being cooled to 60 ~ 65 DEG C, and raw material stirring is evenly obtained high-temperature insulation paint.
10. the preparation method of high-temperature insulation paint according to claim 9, is characterized in that, add aluminum oxide and pigment after being cooled to 60 ~ 65 DEG C.
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| CN201510339641.4A CN104962167B (en) | 2015-06-18 | 2015-06-18 | A kind of high-temperature insulating paint and preparation method thereof |
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| CN201510339641.4A CN104962167B (en) | 2015-06-18 | 2015-06-18 | A kind of high-temperature insulating paint and preparation method thereof |
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| CN104962167B CN104962167B (en) | 2017-03-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567076A (en) * | 2016-03-04 | 2016-05-11 | 北京理工大学 | High-temperature-resistant enamelled wire paint composition based on fluorinated polyaryletherketone copolymerization modified polyimide and preparation method of high-temperature-resistant enamelled wire paint composition |
| CN106883751A (en) * | 2017-04-28 | 2017-06-23 | 国网山东省电力公司平原县供电公司 | A kind of insulated paint and preparation method thereof |
| CN112466663A (en) * | 2020-11-09 | 2021-03-09 | 太仓优盛电子有限公司 | High-temperature dipping treatment process of transformer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567076A (en) * | 2016-03-04 | 2016-05-11 | 北京理工大学 | High-temperature-resistant enamelled wire paint composition based on fluorinated polyaryletherketone copolymerization modified polyimide and preparation method of high-temperature-resistant enamelled wire paint composition |
| CN105567076B (en) * | 2016-03-04 | 2018-06-15 | 北京理工大学 | High temperature-resistant wire lacquer composition based on fluorinated poly arylene ether ketone modification by copolymerization polyimides and preparation method thereof |
| CN106883751A (en) * | 2017-04-28 | 2017-06-23 | 国网山东省电力公司平原县供电公司 | A kind of insulated paint and preparation method thereof |
| CN106883751B (en) * | 2017-04-28 | 2019-04-12 | 国网山东省电力公司平原县供电公司 | A kind of insulated paint and preparation method thereof |
| CN112466663A (en) * | 2020-11-09 | 2021-03-09 | 太仓优盛电子有限公司 | High-temperature dipping treatment process of transformer |
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| CN104962167B (en) | 2017-03-01 |
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Address after: Lian Shi Zhen Hua Lin Tai bridge Wuyang 313000 Zhejiang province Huzhou city Nanxun District Patentee after: Huzhou Hujie New Material Co.,Ltd. Address before: Lian Shi Zhen Hua Lin Tai bridge Wuyang 313000 Zhejiang province Huzhou city Nanxun District Patentee before: HUZHOU HUJIE PAINT Co.,Ltd. |
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Denomination of invention: High temperature resistant insulating paint and its preparation method Effective date of registration: 20221202 Granted publication date: 20170301 Pledgee: Zhejiang Nanxun Rural Commercial Bank Co.,Ltd. Hualin sub branch Pledgor: Huzhou Hujie New Material Co.,Ltd. Registration number: Y2022330003371 |
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