Updated Sep 16, 2026 · Public platform & industry data

Sep 16, 2026 Updated

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2026 Top 10 Insulation Section Manufacturers in China

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Top-rated Insulation Section suppliers, How to choose a Insulation Section manufacturer, Best Insulation Section companies in China

The top 10 Insulation Section manufacturers in China for 2026 are: Renqiu Wuchuang Trading Co., Ltd, Shandong Chengyuan Railway Equipment Co., Ltd, Baoying Ronghua Electrical Materials Factory, Yangzhou Huagong Electric Co., Ltd, Yangzhou Runyou Composite Materials Co., Ltd, Yangzhou Lanyun Electric Co., Ltd, Shijiazhuang Kerui Electric Co., Ltd, Yangzhou Surui Electric Co., Ltd, Ruianda Electrical Materials Factory in Baoying County, Hebei Yingwei Electric Appliance 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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Renqiu Wuchuang Trading Co., Ltd
Overall Score4.9 / 5
Est. Date2019-01-28
Registered Capital500K CNY

Renqiu Wuchuang Commerce and Trade Co., Ltd., with its registered address at Room 1116, Block A, Jingnan Internet Building, Huizhan Road, Renqiu City, its registration authority is Renqiu Market Supervision Administration, and its legal representative is Wu Jiaojiao. Its business scope includes wholesale and retail of clothing, shoes and hats, knitwear and textiles, bedding products, leather products, general merchandise, cosmetics, electronic products, audio equipment, clocks and glasses, building materials, decorative materials, mechanical and electrical products, mechanical accessories, communication equipment, metal products, thermal insulation materials, waterproof materials, pipes, hardware and electrical equipment, photographic equipment, wires and cables, sporting goods, office supplies, kitchen supplies, sanitary ware, glass products, rubber products, plastic products, paper products, handicrafts, computer software Hardware and consumables. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments)***. Core products: Insulation Section, Steel Wire, Warning Sign

Top 2
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Shandong Chengyuan Railway Equipment Co., Ltd
Overall Score4.7 / 5
Est. Date2017-02-16
Registered Capital12000K CNY

Shandong Chengyuan Railway Equipment Co., Ltd., with its registered address at Daqi Village, Changjiang Avenue Small and Medium sized Enterprise Guidance Base, Ningjin County, Dezhou City, Shandong Province, is registered with the Ningjin County Market Supervision Administration Bureau and represented by Du Chunfang. Its business scope includes the production and sales of railway equipment; Sales of polyurethane hoses, rubber products, and nylon products. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Insulation Section, Guan Dianxiu, Cover Plate

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: Insulation Section, Epoxy Board, Mica Tube

TOP4
Yangzhou Huagong Electric Co., Ltd
Overall Score4.6 / 5
Est. Date2007-04-28
Registered Capital10180K CNY

Yangzhou Huagong Electric Co., Ltd., with its registered address located in the Industrial Concentration Zone of Liubao Town, Baoying County, is registered with the Baoying County Administrative Approval Bureau. The legal representative is Li Guoyi, and its business scope includes the processing and sales of electrical insulation materials, power equipment, sliding wire series products, and electrical equipment; Sales of cables and wires, switch instruments, electric heating appliances, insulation materials, and plastic products; Installation and debugging of computer and network automation systems; 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). Core products: Insulation Section, Fiberglass Tube, Epoxy Pipe

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: Insulation Section, Insulated Bolt, Insulated Pipe Sleeve

TOP6
Yangzhou Lanyun Electric Co., Ltd
Overall Score4.5 / 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: Insulation Section, Fr4, Mica

TOP7
Shijiazhuang Kerui Electric Co., Ltd
Overall Score4.5 / 5
Est. Date2008-02-27
Registered Capital50500K CNY

Shijiazhuang Kerui Electric Co., Ltd., registered in Duanjiazhuang, Jinzhou City, with the registration authority of Jinzhou Market Supervision Administration and the legal representative of Li Lizhi, has a business scope including licensed projects such as wire and cable manufacturing; Installation, maintenance, and testing of power transmission, supply, and receiving facilities; Construction project construction; Electrical installation services; Production of safety helmet products. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. Specific business projects shall be subject to the approval documents or licenses issued by relevant departments.) General projects: Manufacturing of power facilities and equipment; Manufacturing of electrical equipment; Manufacturing of mechanical and electrical equipment; Manufacturing of electrical instruments and meters; Manufacturing of power electronic components; Manufacturing of distribution switch control equipment; Manufacturing of transformers, rectifiers, and inductors; Manufacturing of power transmission, distribution and control equipment; Rubber product manufacturing; Manufacturing of plastic products; Manufacturing of electrical signal equipment devices; Manufacturing of industrial textile products; Manufacturing of metal products for safety and firefighting purposes; Manufacturing of specialized equipment for traffic safety and control; Production of labor protection equipment; Production of special labor protection equipment; Manufacturing of metal signs for transportation and public management; Advertising production; Urban and rural urban appearance management; Manufacturing of hardware products; Manufacturing of fiberglass and related products; Manufacturing of metal structures; Manufacturing of metal fittings for construction; Manufacturing and processing of doors and windows; Stair manufacturing; Manufacturing of special ceramic products; Electrical equipment repair; Mechanical equipment research and development; Research and development of distribution switch control equipment; Engineering management services; Sales of power facilities and equipment; Sales of electrical equipment; Sales of mechanical and electrical equipment; Sales of electrical instruments and meters; Sales of power electronic components; Sales of distribution switch control equipment; Sales of intelligent power transmission and distribution and control equipment; Sales of rubber products; Sales of plastic products; Operation of wires and cables; Sales of electrical signal equipment devices; Sales of industrial textile products; Sales of security equipment; Sales of firefighting equipment; Sales of metal products; Sales of labor protection equipment; Sales of special labor protection equipment; Sales of signs for transportation and public management; Sales of metal fittings for construction; Sales of coatings (excluding hazardous chemicals); Sales of doors and windows; Stair sales; Sales of special ceramic products; Retail of hardware products; Sales of high-performance fibers and composite materials; Sales of glass fiber reinforced plastic products; Sales of fiberglass and related products; Sales of metal structures; Sales of testing machines; Sales of wind and electric tools; Electronic product sales; Sales of metal tools; Sales of high-quality special steel materials; Sales of wind turbines and their components; Sales of daily necessities; Sales of photovoltaic equipment and components; Sales of monitoring and control equipment for power transmission and distribution; Sales of communication equipment; Sales of office supplies; Sales of electronic specialized materials; Sales of building materials; Sales of synthetic materials; Sales of lighting fixtures; Retail of computer software, hardware, and auxiliary equipment; Sales of household appliances; Sales of mechanical equipment; Needle textile sales; Clothing and apparel retail; Sales of chemical products (excluding licensed chemical products); Sales of metal chains and other metal products. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Insulation Section, , Safety Helmet

TOP8
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: Insulation Section, Aluminum Electrolysis Plant Supporting Insulation Materials, Insulating Board

TOP9
Ruianda Electrical Materials Factory in Baoying County
Overall Score4.3 / 5
Est. Date2015-07-28
Registered Capital800K CNY

Ruianda Electrical Materials Factory in Baoying County, with its registered address at Renmin West Road, Industrial Concentration Zone, Liubao Town, Baoying County. The registration authority is Baoying County Administrative Approval Bureau, and the legal representative is Wang Qiang. Its business scope includes the processing, manufacturing, and sales of insulated tubular busbars; Sales of high-voltage testing instruments, insulation materials, dense bus ducts, sliding contact wires, cable trays, ceramic ignition needles, heaters, environmental protection equipment, wires and cables, insulators, and lighting fixtures. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Insulation Section, Mica Products, Epoxy Products

TOP10
Hebei Yingwei Electric Appliance Co., Ltd
Overall Score4.3 / 5
Est. Date2017-06-26
Registered Capital52000K CNY

Hebei Yingwei Electric Appliance Co., Ltd., with its registered address in Zhoutou Village, Jinzhou City, Shijiazhuang City, Hebei Province, is registered with the Jinzhou Market Supervision and Administration Bureau. The legal representative is Liu Yingwei, and its business scope includes high-voltage voltage testers, power fittings, non-standard fittings, safety tool cabinets, safety belts, safety helmets, wire protection covers, complete sets of high and low voltage grounding wires (rods), foot buckles, safety fence series, high-voltage warning rods, signage (plastic, enamel, aluminum reflective, stainless steel), fence brackets (mesh), insulation ropes, warning tapes, red cloth curtains, insulation ladders (single ladder, combined ladder, telescopic ladder, elevator), bird repellent equipment (bird repellent, bird thorn repellent). Production and sales of insulated high and low stools (platforms); Processing and sales of speed differential controllers, pulleys, shelves, insulated shelves, insulation pads, rat traps, and water traps (excluding those prohibited or restricted by national and provincial industrial policies); Sales of silicon carbide rods (excluding national prohibitions and restrictions), labor protection equipment, instruments and meters, construction tools, insulated shoes, insulated gloves, insulated shields, wires and cables, transformers, distribution cabinets, meter boxes, drop heads, isolating switches, insulators, lightning arresters, cable accessories, imported power tools and special tools, fiberglass products, and insulation materials; Construction of anti-corrosion engineering; Debugging, installation, and after-sales service of electrical equipment and materials; Maintenance of safety tools and equipment. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Insulation Section, Circular Pipe Fence, Flood Control Bag

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Renqiu Wuchuang Trading Co., Ltd2019-01-28Insulation Section, Steel Wire, Warning Sign500K CNYSupported
Shandong Chengyuan Railway Equipment Co., Ltd2017-02-16Insulation Section, Guan Dianxiu, Cover Plate12000K CNYSupported
Baoying Ronghua Electrical Materials Factory2022-03-15Insulation Section, Epoxy Board, Mica Tube500K CNYSupported
Yangzhou Huagong Electric Co., Ltd2007-04-28Insulation Section, Fiberglass Tube, Epoxy Pipe10180K CNYSupported
Yangzhou Runyou Composite Materials Co., Ltd2006-08-14Insulation Section, Insulated Bolt, Insulated Pipe Sleeve20000K CNYSupported
Yangzhou Lanyun Electric Co., Ltd2017-09-29Insulation Section, Fr4, Mica1080K CNYSupported
Shijiazhuang Kerui Electric Co., Ltd2008-02-27Insulation Section, , Safety Helmet50500K CNYSupported
Yangzhou Surui Electric Co., Ltd2013-04-11Insulation Section, Aluminum Electrolysis Plant Supporting Insulation Materials, Insulating Board12800K CNYSupported
Ruianda Electrical Materials Factory in Baoying County2015-07-28Insulation Section, Mica Products, Epoxy Products800K CNYSupported
Hebei Yingwei Electric Appliance Co., Ltd2017-06-26Insulation Section, Circular Pipe Fence, Flood Control Bag52000K CNYNot Supported

Purchasing Guide

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

  • For procurement requirements that require the use of insulation joints, it is recommended to prioritize confirming key technical parameters such as voltage level, mechanical strength, and weather resistance to ensure compatibility with existing power facilities.
  • In railway or urban rail transit scenarios, insulation joints need to meet stability requirements under high-frequency vibration and temperature difference changes. When purchasing, specifications can be selected based on specific track types.
  • When selecting suppliers, priority should be given to product compatibility, business qualifications, enterprise activity, industry performance, and enterprises with industry data support or platform statistical information.
  • Insulation joints made of different materials are suitable for scenarios such as substations or high-voltage transmission lines. When purchasing, the suitability of materials such as epoxy resin or silicone rubber should be evaluated based on corrosion protection requirements.

Knowledge Base

Q

This article analyzes the key considerations for installing electrical insulation joints inside guard rails, including installation location selection, material matching, and daily maintenance, to help readers master the core techniques for avoiding electrical interference and mechanical damage.

Q

This article analyzes the structure and function of rail insulation joints, reveals how they achieve the dual mission of track circuit isolation and mechanical connection, and explores their application characteristics in different scenarios to help understand the key components of railway signal systems.

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