Updated Sep 16, 2026 · Public platform & industry data

Sep 16, 2026 Updated

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2026 Top 10 Closed Bridge Frame Manufacturers in China

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Top-rated Closed Bridge Frame suppliers, How to choose a Closed Bridge Frame manufacturer, Best Closed Bridge Frame companies in China

The top 10 Closed Bridge Frame manufacturers in China for 2026 are: Shandong Alto Electrical Equipment Co., Ltd, Langfang Wanbo Cable Tray Co., Ltd, Shandong Alto Sen Electrical Equipment Co., Ltd, Chengdu Interstellar Electrical Equipment Co., Ltd, Wuhan Jiehetong Electrical Equipment Co., Ltd, Hebei Longxin Composite Materials Co., Ltd, Wen'an Pengxi Cable Tray Co., Ltd, Shandong Chengrui Electric Power Equipment Co., Ltd, Langfang Gaoxin Metal Products Co., Ltd, Hebei Chuangye Fiberglass Electrical Equipment 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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Shandong Alto Electrical Equipment Co., Ltd
Overall Score4.9 / 5
Est. Date2018-02-01
Registered Capital29000K CNY

Shandong Aotuosi Electrical Equipment Co., Ltd. is registered at Room 102, No. 16 Weisi Road North Jingsi Road East, Fenghuang Industrial Park, Liuyuan Street, Dongchangfu District, Liaocheng City, Shandong Province (inside Huayao Metal Institute). The registration authority is the Market Supervision and Administration Bureau of Dongchangfu District, Liaocheng City, and the legal representative is Fan Huaxi. The business scope includes the production and processing, wholesale and retail, installation, and technical services of electrical equipment, cables, cable trays, bus ducts, transformers, distribution boxes, instruments and meters, steel, metal materials (except for those restricted or prohibited by the state), hardware and electromechanical products. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Closed Bridge Frame, Polymer Cable Tray, Network Format Bridge

Top 2
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Langfang Wanbo Cable Tray Co., Ltd
Overall Score4.8 / 5
Est. Date2014-03-19
Registered Capital10000K CNY

Langfang Wanbo Cable Tray Co., Ltd., with its registered address in Lucheng Village, Xinzhen Town, Wen'an County, Langfang City, Hebei Province, is registered with the Market Supervision Administration of Wen'an County, Langfang City. The legal representative is Yu Qian, and its business scope includes general projects such as metal structure manufacturing; Sales of metal structures; Manufacturing of electrical accessories; Sales of electrical accessories; Manufacturing of metal fittings for construction; Sales of metal fittings for construction; Manufacturing of power facilities and equipment; Sales of power facilities and equipment; Sales of metal materials; Import and export of goods. (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: Closed Bridge Frame, Stainless Steel Cable Tray, Cable Tray

Top 3
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Shandong Alto Sen Electrical Equipment Co., Ltd
Overall Score4.8 / 5
Est. Date2021-12-14
Registered Capital3000K CNY

Shandong Alto Sen Electrical Equipment Co., Ltd., registered at Room 101, Office Building, No. 16 Weisi Road, Fenghuang Industrial Park, Liuyuan Street, Dongchangfu District, Liaocheng City, Shandong Province (within the premises of Huayao Metal Technology Co., Ltd.), registered with the Market Supervision and Administration Bureau of Dongchangfu District, Liaocheng City, with Chen Linan as the legal representative. Its business scope includes general projects: sales of electrical equipment; Electronic product sales; Operation of wires and cables; Sales of instruments and meters; Sales of communication equipment; Sales of metal structures; Sales of mechanical and electrical equipment; Sales of lighting fixtures; Sales of metal materials; Wholesale of hardware products; Retail of hardware products; Manufacturing of metal structures; Manufacturing of mechanical and electrical equipment; Manufacturing of transformers, rectifiers, and inductors; Manufacturing of hardware 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: Closed Bridge Frame, Fireproof Cable Tray, Fiberglass Cable Tray

TOP4
Chengdu Interstellar Electrical Equipment Co., Ltd
Overall Score4.7 / 5
Est. Date2013-04-07
Registered Capital10000K CNY

Chengdu Interstellar Electrical Equipment Co., Ltd., with its registered address at 1st Floor, Building 6, No. 666 Xiangyang Road, Qingbaijiang District, Chengdu City, is registered with the Qingbaijiang District Market Supervision and Administration Bureau. The legal representative is Wang Mingxian, and its business scope includes the production, processing, and sales of electrical equipment, cable trays, mechanical equipment and accessories, plastic products, rubber products, wires and cables, pipes, metal mesh, hardware and electrical equipment, insulation materials, fire protection equipment, building materials, and decorative materials; Construction engineering installation (operated with qualification certificate). Projects that require approval by law can only be operated after approval by relevant departments.. Core products: Closed Bridge Frame, Accessories,

TOP5
Wuhan Jiehetong Electrical Equipment Co., Ltd
Overall Score4.7 / 5
Est. Date2021-08-24
Registered Capital2000K CNY

Wuhan Jiehetong Electrical Equipment Co., Ltd., with its registered address at No. 1, 4th floor, Unit 1, Building 14, Nande International City Phase III, Dingyuan Village, Qianchuan Street, Huangpi District, Wuhan City, Hubei Province, is registered with the Market Supervision Administration of Huangpi District, Wuhan City. The legal representative is Xu Shangyin, and its business scope includes general projects such as metal structure manufacturing; Sales of metal structures; Sales of metal products; Manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Retail of hardware products; Sales of building materials; Sales of firefighting equipment; Sales of special labor protection equipment; Production of labor protection equipment; Sales of labor protection equipment; Sales of electrical equipment; Manufacturing of power facilities and equipment (except for licensed businesses, can independently operate projects that are not prohibited or restricted by laws and regulations). Core products: Closed Bridge Frame, Spray Painted Bridge Frame, Fiberglass Cable Tray

TOP6
Hebei Longxin Composite Materials Co., Ltd
Overall Score4.6 / 5
Est. Date2009-05-13
Registered Capital51800K CNY

Hebei Longxin Composite Materials Co., Ltd., with its registered address at Chunfeng Street, Economic Development Zone, Jizhou District, Hengshui City, is registered with the Jizhou District Market Supervision and Administration Bureau. The legal representative is Gao Weimin, and its business scope includes general projects such as glass fiber and product manufacturing; Sales of fiberglass and related products; Manufacturing of high-performance fibers and composite materials; Sales of high-performance non-ferrous metals and alloy materials; Manufacturing of glass fiber reinforced plastic products; Sales of glass fiber reinforced plastic products; Manufacturing of metal structures; Sales of metal structures; Manufacturing of metal materials; Sales of metal materials; Sales of metal products; Manufacturing of synthetic materials (excluding hazardous chemicals); Sales of synthetic materials; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Manufacturing of engineering plastics and synthetic resins; Sales of engineering plastics and synthetic resins; Synthetic fiber manufacturing; Sales of synthetic fibers; Research and development of new material technology; Import and export of goods; Technology import and export; Import and export agency; Solid waste management; Research and development of resource recycling technology; Processing of renewable resources. (Except for projects that require approval according to law, business activities can be carried out independently based on the business license) Licensed project: Road freight transportation (excluding dangerous goods). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. The specific business projects shall be subject to the approval documents or licenses issued by the relevant departments.). Core products: Closed Bridge Frame, Polymer Bridge Frame, Frp Cable Tray

TOP7
Wen'an Pengxi Cable Tray Co., Ltd
Overall Score4.6 / 5
Est. Date2016-03-22
Registered Capital10500K CNY

Wen'an Pengxi Cable Tray Co., Ltd. is registered in Lucheng Village, Xinzhen Town, Wen'an County, Langfang City, Hebei Province. The registration authority is the Market Supervision Administration of Wen'an County, Langfang City, and the legal representative is Yu Liancheng. Its business scope includes the production and sales of cable trays and accessories, distribution boxes, and distribution cabinets. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Closed Bridge Frame, Fireproof Cable Tray, Galvanized Cable Tray

TOP8
Shandong Chengrui Electric Power Equipment Co., Ltd
Overall Score4.6 / 5
Est. Date2022-11-17
Registered Capital15000K CNY

Shandong Chengrui Electric Power Equipment Co., Ltd. is located at No. 58 Sanghai Village, Jiangguantun Street, Liaocheng Economic and Technological Development Zone, Shandong Province. It was established on November 17, 2022, with the registration authority of Liaocheng Economic and Technological Development Zone Market Supervision Administration and the legal representative being Zhu Hongjian. Core products: Closed Bridge Frame, Aluminum Alloy Cable Tray, Spray Painted Bridge Frame

TOP9
Langfang Gaoxin Metal Products Co., Ltd
Overall Score4.4 / 5
Est. Date2020-11-12
Registered Capital1000K CNY

Langfang Gaoxin Metal Products Co., Ltd. is registered at Sicun Village East, Xinzhen Town, Wen'an County, Langfang City, Hebei Province. The registration authority is the Market Supervision Administration of Wen'an County, Langfang City, and the legal representative is Wang Yongmei. The business scope includes metal structure manufacturing. Manufacturing of lightweight building materials (excluding prohibited projects). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Closed Bridge Frame, Trough Cable Tray, Large Span Bridge Frame

TOP10
Hebei Chuangye Fiberglass Electrical Equipment Co., Ltd
Overall Score4.4 / 5
Est. Date2009-03-26
Registered Capital60180K CNY

Hebei Chuangye Fiberglass Electrical Equipment Co., Ltd., with its registered address at 1269 Xinghua South Street, Jizhou District, Hengshui City, is registered with the Jizhou District Market Supervision and Administration Bureau. The legal representative is Fan Shengguang, and its business scope includes the production, sales, and installation of polyurethane composite cable trays (cable conduit boxes) and composite material (SMC) cable troughs; Production and sales of cable conduit boxes, extruded profiles, molded products, cable trays, cooling towers, cooling tower fillers, fiberglass sand filled pipelines, fiberglass storage tanks, towers, process pipelines and sleeves, electrostatic plastic powder, and hardware products; Sales of explosion-proof electrical appliances and instruments, subcontracting of construction labor services; Sales of household appliances, clothing, shoes, hats, and kitchenware. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Closed Bridge Frame, Molded Cable Bracket, Smc Cable Tray

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Shandong Alto Electrical Equipment Co., Ltd2018-02-01Closed Bridge Frame, Polymer Cable Tray, Network Format Bridge29000K CNYSupported
Langfang Wanbo Cable Tray Co., Ltd2014-03-19Closed Bridge Frame, Stainless Steel Cable Tray, Cable Tray10000K CNYNot Supported
Shandong Alto Sen Electrical Equipment Co., Ltd2021-12-14Closed Bridge Frame, Fireproof Cable Tray, Fiberglass Cable Tray3000K CNYSupported
Chengdu Interstellar Electrical Equipment Co., Ltd2013-04-07Closed Bridge Frame, Accessories, 10000K CNYNot Supported
Wuhan Jiehetong Electrical Equipment Co., Ltd2021-08-24Closed Bridge Frame, Spray Painted Bridge Frame, Fiberglass Cable Tray2000K CNYSupported
Hebei Longxin Composite Materials Co., Ltd2009-05-13Closed Bridge Frame, Polymer Bridge Frame, Frp Cable Tray 51800K CNYNot Supported
Wen'an Pengxi Cable Tray Co., Ltd2016-03-22Closed Bridge Frame, Fireproof Cable Tray, Galvanized Cable Tray10500K CNYSupported
Shandong Chengrui Electric Power Equipment Co., Ltd2022-11-17Closed Bridge Frame, Aluminum Alloy Cable Tray, Spray Painted Bridge Frame15000K CNYSupported
Langfang Gaoxin Metal Products Co., Ltd2020-11-12Closed Bridge Frame, Trough Cable Tray, Large Span Bridge Frame1000K CNYSupported
Hebei Chuangye Fiberglass Electrical Equipment Co., Ltd2009-03-26Closed Bridge Frame, Molded Cable Bracket, Smc Cable Tray60180K CNYNot Supported

Purchasing Guide

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

  • For procurement requirements that require the use of enclosed cable trays, it is recommended to prioritize confirming specifications such as tray width, height, and plate thickness to ensure compatibility with cable routing capacity and installation environment.
  • In scenarios with high protection requirements such as chemical engineering or data centers, the sealing performance and corrosion resistance of enclosed cable trays need to be evaluated as key technical parameters.
  • 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.
  • In the actual procurement process of enclosed cable trays, it is recommended to compare the surface treatment processes (such as galvanizing or spraying) of the trays based on different indoor and outdoor application scenarios to meet environmental requirements.

Knowledge Base

Q

When choosing the material for enclosed cable trays, it is necessary to consider the usage environment comprehensively. In environments with strong corrosiveness, such as chemical enterprises, it is recommended to prioritize the use of corrosion-resistant materials such as stainless steel or aluminum alloy for cable trays. In general indoor environments, galvanized materials can usually meet the requirements. If there is a high requirement for fire resistance performance, fire-resistant bridge frames can be chosen.

Q

This article provides a detailed comparison of the differences between trapezoidal cable trays and enclosed cable trays in terms of structure, application scenarios, protective performance, and cost. The trapezoidal bridge adopts an open design, which has good heat dissipation but weak protection; The fully sealed structure of the enclosed bridge is dustproof and waterproof, suitable for harsh environments. There are significant differences between the two in terms of load-bearing capacity, installation method, and price, and users can choose according to their actual needs.

Q

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