Updated Aug 2, 2026 · Public platform & industry data

Aug 2, 2026 Updated

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2026 Top 10 Insulating Board Manufacturers in China Jiangsu

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Top-rated Insulating Board suppliers, How to choose a Insulating Board manufacturer, Best Insulating Board companies in China

The top 10 Insulating Board manufacturers in Jiangsu for 2026 are: Jiangsu Dongnan Fiberglass Technology Co., Ltd, Kunshan Weihao Electronic Insulation Materials Co., Ltd, Baoying Ronghua Electrical Materials Factory, Yangzhou Lanyun Electric Co., Ltd, Yangzhou Runyou Composite Materials Co., Ltd, Nanjing Feijia Electrical Insulation Materials Co., Ltd, Yangzhou Surui Electric Co., Ltd, Changzhou Honglei Composite Materials Co., Ltd, Fenglin Cui New Materials Technology (Suzhou) Co., Ltd, Yangzhou Haochen Electric Co., Ltd. Ranked based on product relevance, certifications, company activity, and industry performance. This list is widely used for supplier comparison and sourcing decisions.

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Top 1
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Jiangsu Dongnan Fiberglass Technology Co., Ltd
Overall Score4.9 / 5
Est. Date2021-06-09
Registered Capital30000K CNY

Jiangsu Dongnan Fiberglass Technology Co., Ltd., with its registered address at No. 18 Yihe Road, Sanmao Street, Yangzhong City, Zhenjiang City, is registered with the Yangzhong Municipal Government Service Management Office. The legal representative is Zhang Climbing, and its business scope includes general projects such as engineering and technical research and experimental development; Manufacturing of glass fiber reinforced plastic products; Sales of glass fiber reinforced plastic products; Manufacturing of fiberglass and related products; Sales of fiberglass and related products; Manufacturing of high-speed rail equipment and accessories; Sales of high-speed rail equipment and accessories; Manufacturing of metal structures; Sales of metal structures; Rubber product manufacturing; Sales of rubber products; Manufacturing of plastic products; Sales of plastic products; Manufacturing of electronic components and electromechanical equipment; Sales of electronic components and electromechanical equipment; Sales of special ceramic products (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law). Core products: Insulating Board, Glass Fiber Reinforced Plastic Profile Channel Steel, Fr4

Top 2
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Kunshan Weihao Electronic Insulation Materials Co., Ltd
Overall Score4.7 / 5
Est. Date2005-07-19
Registered Capital10000K CNY

Kunshan Weihao Electronic Insulation Materials Co., Ltd. is registered at No. 61 Kangjia Road, Zhoushi Town, Kunshan City. The registration authority is the Kunshan Administrative Approval Bureau, and the legal representative is Ye Guohong. The company's business scope includes the sales of insulation materials, electronic products and accessories, chemical products (excluding dangerous goods), fixture accessories, instruments and meters, electronic product design, manufacturing, processing, and sales of hardware products, plastic products, metal products, and insulation products. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments) General projects: Import and export of goods; Technology import and export (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law). Core products: Insulating Board, Insulation Components, Smc Processed Parts

Top 3
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Baoying Ronghua Electrical Materials Factory
Overall Score4.7 / 5
Est. Date2022-03-15
Registered Capital500K CNY

Baoying Ronghua Electrical Materials Factory, with its registered address in Zhangyuan Village, Liubao Town, Baoying County, is registered with the Baoying County Administrative Approval Bureau and represented by He Yumei. Its business scope includes general projects such as electrical equipment manufacturing; Manufacturing of mica products; Sales of mica products; Manufacturing of electronic specialized materials; Sales of electronic specialized materials; Manufacturing of power electronic components; Manufacturing of electronic components; Wholesale of electronic components; Retail of electronic components; Sales of power electronic components; Manufacturing of power facilities and equipment; Sales of instruments and meters; Manufacturing of electronic specialized equipment; Sales of electronic specialized equipment; Sales of electrical equipment; Sales of mechanical and electrical equipment; Manufacturing of electrical instruments and meters; Sales of electrical instruments and meters; Manufacturing of non-ferrous metal alloys; Sales of non-ferrous metal alloys; Sales of fiberglass and related products; Manufacturing of high-speed rail equipment and accessories; Sales of high-speed rail equipment and accessories; Manufacturing of asbestos products; Sales of asbestos products; Mold manufacturing; Mold sales; Manufacturing of specialized electrical and mechanical equipment; Sales of offshore wind power related equipment (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law). Core products: Insulating Board, Mica Tube, Insulation Board Processing

TOP4
Yangzhou Lanyun Electric Co., Ltd
Overall Score4.6 / 5
Est. Date2017-09-29
Registered Capital1080K CNY

Yangzhou Lanyun Electric Co., Ltd., registered at Chuangye Road, Industrial Concentration Zone, Liubao Town, Baoying County, registered with the Baoying County Administrative Approval Bureau, with Yang Lanyun as the legal representative. Its business scope includes the manufacturing and sales of sliding wires, cable trays, instruments and meters, wires and cables, electric heating appliances, insulation products, and plastic products; Sales of electrical insulation materials. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments) General project: Manufacturing of mica products; Sales of mica products; Sales of electrical equipment; Manufacturing of electrical equipment (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law). Core products: Insulating Board, Epoxy, Mica

TOP5
Yangzhou Runyou Composite Materials Co., Ltd
Overall Score4.6 / 5
Est. Date2006-08-14
Registered Capital20000K CNY

Yangzhou Runyou Composite Materials Co., Ltd., registered at the west end of Erqiao, Chengxi Industrial Concentration Zone, Baoying County, with the registration authority of Baoying County Administrative Approval Bureau and the legal representative of Xu Zhiwei, engages in the processing and sales of insulation materials, fiberglass composite materials, civil engineering material products, wood plastic composite materials, funeral supplies (excluding those requiring special environmental approval); Research and sales of environmental protection equipment materials, insulation materials, chemical materials (excluding hazardous chemicals), cable trays, sliding guide rails, cylinder silent buffers, and pig iron; Sales of aluminum products; Import and export business of various commodities through self operation and agency, except for commodities restricted or prohibited by the state for enterprise operation or import and export. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments) General projects: sales of engineering plastics and synthetic resins; Rubber product manufacturing; Sales of rubber products; Manufacturing of electrical equipment; Sales of electrical equipment; Manufacturing of mica products; Sales of mica products (except for projects that require approval according to law, business activities can be carried out independently with a business license in accordance with the law) General projects: Manufacturing of plastic products; Sales of plastic products (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law). Core products: Insulating Board, Insulated Protective Frame, High Temperature Resistant Insulation Sealing Plate

TOP6
Nanjing Feijia Electrical Insulation Materials Co., Ltd
Overall Score4.5 / 5
Est. Date2018-12-19
Registered Capital2000K CNY

Nanjing Feijia Electrical Insulation Materials Co., Ltd., with its registered address at Room 2357, Building A1, No. 216 Pu Liu North Road, Getang Street, Jiangbei New District, Nanjing City. The registration authority is the Administrative Approval Bureau of Nanjing Jiangbei New District Management Committee, and the legal representative is Ji Yefei. Its business scope includes the sales of insulation materials, dust removal bags, rubber products, ceramic ignition needles, wires and cables, insulators, and lighting equipment; Thin film, instrumentation, electric heating appliances, dense bus ducts, sliding contact wires, cable trays, processing, manufacturing, and sales. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments) General project: Manufacturing of mica products; Sales of mica products; Manufacturing of fiberglass and related products; Sales of fiberglass and related products; Manufacturing of glass fiber reinforced plastic products; Sales of glass fiber reinforced plastic products; Manufacturing of high-performance fibers and composite materials; Sales of high-performance fibers and composite materials; Manufacturing of engineering plastics and synthetic resins; Sales of engineering plastics and synthetic resins; Manufacturing of non-metallic mineral products; Sales of metal based composite materials and ceramic based composite materials; Production of refractory materials; Sales of refractory materials; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion (except for projects that require approval according to law, business activities can be carried out independently with a business license in accordance with the law). Core products: Insulating Board, Fr4, Epoxy Fixture

TOP7
Yangzhou Surui Electric Co., Ltd
Overall Score4.5 / 5
Est. Date2013-04-11
Registered Capital12800K CNY

Yangzhou Surui Electric Co., Ltd., registered at Shuangbao Road, Industrial Concentration Zone, Liubao Town, Baoying County, with the registration authority of Baoying County Administrative Approval Bureau and the legal representative of Hu Jinfu, is engaged in the manufacturing of high and low voltage testing equipment, high voltage switchgear, sliding contact wires, bus ducts, bridge frames, DC screens, and electronic mechanical equipment; Production, processing, sales, and installation of insulation materials (polyimide film), wires, cables, drag chains, alumina ceramics, textile ceramic accessories, electric heating tubes, heaters, and hardware appliances. General project: Manufacturing of glass fiber reinforced plastic products; Manufacturing of fiberglass and related products; Manufacturing of mica products; Manufacturing of plastic products; Sales of glass fiber reinforced plastic products; Sales of fiberglass and related products; Sales of mica products; Sales of plastic products (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law). Core products: Insulating Board, Aluminum Electrolysis Plant Supporting Insulation Materials, Insulating Paper

TOP8
Changzhou Honglei Composite Materials Co., Ltd
Overall Score4.5 / 5
Est. Date2021-06-18
Registered Capital5000K CNY

Changzhou Honglei Composite Materials Co., Ltd., with its registered address at No. 67 Shunshan Road, Zhenglu Town, Tianning District, Changzhou City, is registered with the Administrative Approval Bureau of Tianning District, Changzhou City. The legal representative is Chen Shiwang, and its business scope includes general projects such as the manufacturing of high-performance fibers and composite materials; Sales of high-performance fibers and composite materials; Sales of specialized equipment for environmental protection; Mechanical parts and component processing; Sales of mechanical parts and components; Manufacturing of general components; General equipment manufacturing (excluding special equipment manufacturing); Specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); Electronic product sales; Sales of mechanical equipment; Sales of metal products (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law). Core products: Insulating Board, , Profiled Bar

TOP9
Fenglin Cui New Materials Technology (Suzhou) Co., Ltd
Overall Score4.4 / 5
Est. Date2021-06-10
Registered Capital1000K CNY

Fenglin Cui New Material Technology (Suzhou) Co., Ltd., registered at Room 11061, 11th Floor, Building B, Vitality Business Plaza, No. 185 Jumao Street, Yuanhe Street, Xiangcheng District, Suzhou City, registered with the Administrative Approval Bureau of Xiangcheng District, Suzhou City. The legal representative is Sun Junhong, and the business scope includes general projects: research and development of new material technology; Research and development of resource recycling technology; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Sales of mica products; Solar power generation technology services; Contract energy management; Energy saving management services; Sales of chemical products (excluding licensed chemical products); Sales of fiberglass and related products; Sales of electrical equipment; Sales of electrical equipment; Sales of industrial robots; Sales of intelligent robots; Sales of mechanical equipment; Sales of coal and its products; Sales of arts and crafts and ceremonial supplies (excluding ivory and its products); Art agency; Wholesale of daily necessities; Sales of daily necessities; Gift and flower sales; Sales of office supplies; Sales of household appliances; Electronic product sales; Sales of agricultural and sideline products; Food sales (only selling pre packaged food, excluding alcohol); Internet sales of food (only pre packaged food); Wholesale of edible agricultural products; Domestic trade agency (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law). Core products: Insulating Board, Wind Power Generation, Motor

TOP10
Yangzhou Haochen Electric Co., Ltd
Overall Score4.4 / 5
Est. Date2015-12-31
Registered Capital5000K CNY

Yangzhou Haochen Electric Co., Ltd., with its registered address at No. 9-13 Yanyang Avenue, Industrial Concentration Zone, Liubao Town, Baoying County, is registered with the Baoying County Administrative Approval Bureau and represented by Zhu Biao as the legal representative. Its business scope includes research and development of testing instruments; Sliding guide rail lifting equipment, safety sliding contact wires, bus ducts, cable trays, ceramics, dust removal bags, hardware appliances, electric heaters, insulation materials, box type substations, high and low voltage switchgear, metal materials (excluding smelting), metallurgical materials, furnace materials, molded pressed products, mica products, epoxy products processing (except for those requiring special environmental approval), and sales; Sales of insulation materials, wires and cables, and woven bags. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Insulating Board, Mica Tube, Epoxy Pipe

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Jiangsu Dongnan Fiberglass Technology Co., Ltd2021-06-09Insulating Board, Glass Fiber Reinforced Plastic Profile Channel Steel, Fr430000K CNYSupported
Kunshan Weihao Electronic Insulation Materials Co., Ltd2005-07-19Insulating Board, Insulation Components, Smc Processed Parts10000K CNYSupported
Baoying Ronghua Electrical Materials Factory2022-03-15Insulating Board, Mica Tube, Insulation Board Processing500K CNYSupported
Yangzhou Lanyun Electric Co., Ltd2017-09-29Insulating Board, Epoxy, Mica1080K CNYSupported
Yangzhou Runyou Composite Materials Co., Ltd2006-08-14Insulating Board, Insulated Protective Frame, High Temperature Resistant Insulation Sealing Plate20000K CNYSupported
Nanjing Feijia Electrical Insulation Materials Co., Ltd2018-12-19Insulating Board, Fr4, Epoxy Fixture2000K CNYSupported
Yangzhou Surui Electric Co., Ltd2013-04-11Insulating Board, Aluminum Electrolysis Plant Supporting Insulation Materials, Insulating Paper12800K CNYSupported
Changzhou Honglei Composite Materials Co., Ltd2021-06-18Insulating Board, , Profiled Bar5000K CNYSupported
Fenglin Cui New Materials Technology (Suzhou) Co., Ltd2021-06-10Insulating Board, Wind Power Generation, Motor1000K CNYSupported
Yangzhou Haochen Electric Co., Ltd2015-12-31Insulating Board, Mica Tube, Epoxy Pipe5000K CNYSupported

Purchasing Guide

Based on real user feedback, we provide the following suggestions:

  • In the actual procurement process of insulation boards, it is recommended to match specific application scenarios based on key technical parameters such as voltage level and temperature resistance range. For example, high-voltage equipment needs to use boards with higher dielectric strength.
  • When selecting suppliers, priority should be given to product compatibility, business qualifications, enterprise activity, industry performance, and companies with industry data support to ensure supply stability and compliance.
  • For different application scenarios such as distribution cabinets and transformers, differentiated selection should be made based on the mechanical strength and flame retardant performance of insulation boards to avoid redundant or insufficient performance.
  • In the procurement of insulation boards for long-term use in the industrial field, it is recommended to pay attention to the industry performance and platform statistical information of suppliers to evaluate the reliability of their products in practical applications.

Knowledge Base

Q

This article focuses on manufacturers of insulation board processing equipment, introducing Shanghai Dingdi CNC Equipment Co., Ltd. and Qingdao Suba CNC Technology Co., Ltd

Ranking Evaluation Method

This ranking is generated based on public data from Baidu B2B platform and common industry assessment dimensions, focusing on enterprise activity, business qualifications, product matching and industry performance to provide valuable manufacturer ranking information for buyers.

DimensionDescription
Data SourceMulti-dimensional data including platform public data, enterprise certification, user reviews, and transaction records
AssessmentComprehensive indicators including enterprise activity, qualifications, product quality, service capability, and user reputation
Update FrequencyRanking data is updated daily to ensure timeliness and accuracy
SuggestionRankings are for reference only. We recommend comprehensive evaluation based on actual needs