Updated Oct 28, 2026 · Public platform & industry data

Oct 28, 2026 Updated

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2026 Top 10 Square Cover Plate Manufacturers in China

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Top-rated Square Cover Plate suppliers, How to choose a Square Cover Plate manufacturer, Best Square Cover Plate companies in China

The top 10 Square Cover Plate manufacturers in China for 2026 are: Zibo Xintuo Composite Materials Technology Co., Ltd, Hebei Bangzhu Building Materials Co., Ltd, Zhongtian (Shandong) Electric Power Technology Co., Ltd, Shaanxi Aoyu Industrial Co., Ltd, Hebei Changren Environmental Protection Equipment Co., Ltd, Renqiu Wuchuang Trading Co., Ltd, Hebei Jupai Environmental Protection Equipment Co., Ltd, Cangzhou Shengkai Building Materials Co., Ltd, Foshan Gangjing Steel Co., Ltd, Shandong Bohui Iron and Steel 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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Zibo Xintuo Composite Materials Technology Co., Ltd
Overall Score4.9 / 5
Est. Date2014-05-08
Registered Capital2000K CNY

Zibo Xintuo Composite Materials Technology Co., Ltd., registered at No. 111 Changguo West Road, Zhangdian District, Zibo City, Shandong Province (No. 417 Luzhong Hardware and Electrical City), registered with the Market Supervision and Administration Bureau of Zibo Economic Development Zone, with legal representative Shao Yunyun. Its business scope includes research and development of glass fiber composite materials, cement composite materials, automotive composite materials, glass composite materials, and metal composite materials; Design, sales, and installation of plastic wood, composite fiber wall panels, reinforced composite flooring, composite alloys, composite glass, composite doors and windows furniture, stainless steel composite panels, composite metal ceramics, and composite plastic handicrafts; Sales of indoor and outdoor composite coatings. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Square Cover Plate, Stainless Steel Invisible Manhole Cover, Flower Box

Top 2
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Hebei Bangzhu Building Materials Co., Ltd
Overall Score4.7 / 5
Est. Date2021-05-24
Registered Capital3000K CNY

Hebei Bangzhu Building Materials Co., Ltd. is registered in Bailing Village, Dongfushan Township, Xushui District, Baoding City, Hebei Province. The registration authority is Xushui District Market Supervision Administration, and the legal representative is Wang Jing. Its business scope includes the manufacturing of cement products (excluding commercial concrete). Manufacturing of concrete structural components and asbestos cement products; Manufacturing of lightweight building materials; Wholesale and retail of ductile iron manhole covers, grates, building materials (excluding hazardous chemicals), and metal products. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments)**. Core products: Square Cover Plate, Ecological Framework, Manhole Cover Plate

Top 3
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Zhongtian (Shandong) Electric Power Technology Co., Ltd
Overall Score4.7 / 5
Est. Date2022-01-06
Registered Capital50000K CNY

Zhongtian (Shandong) Electric Power Technology Co., Ltd., with its registered address located at the factory building in the south courtyard of Lushan Avenue and Zhangbian Road intersection, Fengshui Town, Zibo Economic Development Zone, Zibo City, Shandong Province, China. The registration authority is the Market Supervision and Administration Bureau of Zibo Economic Development Zone, and the legal representative is Hu Zhiqiang. The business scope includes general projects: research and development of high-efficiency energy-saving technologies in the power industry; Sales of electronic specialized equipment; Residential water and electricity installation and maintenance services; Sales of mechanical and electrical equipment; Centralized fast charging station; Manufacturing of power facilities and equipment; Sales of intelligent power transmission and distribution and control equipment; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Sales of advanced power electronic devices; Information system operation and maintenance services; Research and development of motors and their control systems; Sales of electrical equipment; Research and development of distribution switch control equipment; Sales of instruments and meters; Sales of power facilities and equipment; Research and development of new material technology; Mechanical equipment research and development; Network technology services; Internet sales (except for the sale of goods that need to be licensed); Sales of chemical products (excluding licensed chemical products); Sales of sanitary ceramic products; Sales of building decoration materials; Sales of architectural ceramic products; Sales of sanitary ware; Mold sales; Mold manufacturing; Sales of specialized equipment for environmental protection; Sales of mechanical parts and components; Mechanical parts and component processing; Sales of building materials; Installation services for environmental sanitation public facilities; Municipal facility management; Manufacturing of specialized equipment for traffic safety and control; Sales of electrical signal equipment devices; Manufacturing of communication equipment; Manufacturing of synthetic materials (excluding hazardous chemicals); Sales of synthetic materials; Sales of building waterproofing membrane products; Manufacturing of high-performance fibers and composite materials; Sales of high-performance fibers and composite materials; Sales of glass fiber reinforced plastic products; Manufacturing of glass fiber reinforced plastic products; Sales of cement products; Sales of concrete structural components; Manufacturing of lightweight building materials; Sales of lightweight building materials; Sales of metal products; Manufacturing of high-speed rail equipment and accessories; Sales of high-speed rail equipment and accessories; Manufacturing of power electronic components; Sales of power electronic components; Research and development of hardware products; Manufacturing of hardware products; Wholesale of hardware products; Automotive parts research and development; Manufacturing of automotive parts and accessories; Wholesale of automotive spare parts; Construction of earthwork engineering; Import and export of goods; Technology import and export. (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: Square Cover Plate, Tunnel Power Cover Plate, Highway Cover Plate

TOP4
Shaanxi Aoyu Industrial Co., Ltd
Overall Score4.6 / 5
Est. Date2021-08-20
Registered Capital500K CNY

Shaanxi Aoyu Industrial Co., Ltd., with its registered address at Gaojing Avenue, Shaanxi Guochu Logistics Park Pipeline Industrial Zone, Yongle Town, Jinghe New City, Xixian New Area, Shaanxi Province. The registration authority is Jinghe New City Branch of the Market Supervision Administration of Xixian New Area, Shaanxi Province, and the legal representative is Ye Yingyan. Its business scope includes general projects such as plastic product manufacturing; Rubber product manufacturing; Manufacturing of glass fiber reinforced plastic products; Manufacturing of plastic packaging boxes and containers; Manufacturing of synthetic materials (excluding hazardous chemicals); Manufacturing of building waterproofing membrane products; Manufacturing of material handling equipment; Sales of plastic products; Sales of rubber products; Sales of pipeline transportation equipment; Wholesale of hardware products; Sales of building decoration materials; Sales of electronic components and electromechanical equipment; Sales of metal products; Sales of valves and plugs; Sales of synthetic materials; General cargo warehousing services (excluding projects requiring permits and approvals such as hazardous chemicals); Sales of building waterproofing membrane products; Sales of glass fiber reinforced plastic products; Sales of metal chains and other metal products; Supply chain management services; Operation of wires and cables; Loading and unloading handling; Office services; Engineering management services; Enterprise management consulting; Marketing planning; Technology intermediary services; Network technology services; Internet of Things technology services; Conference and exhibition services; Specialized equipment repair; Construction of landscaping and greening projects; Agricultural specialties and auxiliary activities; Agricultural and horticultural services; Intelligent agricultural management; Information consulting services (excluding licensed information consulting services); Labor services (excluding labor dispatch); Data processing and storage support services; 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: Square Cover Plate, Pe Replacement Pipe, Deformed Steel Bar

TOP5
Hebei Changren Environmental Protection Equipment Co., Ltd
Overall Score4.6 / 5
Est. Date2019-05-16
Registered Capital3000K CNY

Hebei Changren Environmental Protection Equipment Co., Ltd. is located on the north side of Nanhuan Road in Zaoqiang County, Hengshui City, Hebei Province. The registered authority is the Market Supervision and Administration Bureau of Zaoqiang County, Hengshui City, and the legal representative is Song Junpeng. Its business scope includes processing, manufacturing, designing, installing, repairing, and selling air pollution control equipment, solid waste and water treatment equipment, water supply equipment, purification and energy-saving equipment, metal products, integrated prefabricated pump stations, and integrated pump rooms; Desulfurization, denitrification, and whitening equipment, wet electrostatic precipitator equipment; Air pollution control equipment, sewage treatment equipment; Exhaust gas purification tower, absorption tower, defogger, spray pipeline; Fiberglass containers, pipelines, fans, cooling towers, septic tanks, sewage tank covers, water tanks, cable trays, handicrafts; Fiberglass hand pasted products, fiberglass wrapped products, fiberglass chimneys, fiberglass molded products, fiberglass chimneys, fiberglass pultruded products; Resin manhole cover, resin drainage ditch; Anti corrosion and epoxy flooring construction, transportation of general goods (excluding dangerous goods), export business of self-produced products and technologies of the enterprise, and import business of mechanical equipment, spare parts, raw and auxiliary materials and technologies required by the enterprise, except for goods and technologies restricted or prohibited from import and export by the state. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Square Cover Plate, Intelligent Interception Lifting Pump Station, Integrated Smart Pump Station

TOP6
Renqiu Wuchuang Trading Co., Ltd
Overall Score4.5 / 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: Square Cover Plate, Steel Wire, Warning Sign

TOP7
Hebei Jupai Environmental Protection Equipment Co., Ltd
Overall Score4.5 / 5
Est. Date2022-02-07
Registered Capital6000K CNY

Hebei Jupai Environmental Protection Equipment Co., Ltd. is located at 160 Shengli Road West Market East Street, Zaoqiang Town, Zaoqiang County, Hengshui City, Hebei Province. It was established on February 7, 2022, with the registration authority of Hengshui Zaoqiang County Market Supervision and Administration Bureau and the legal representative being Zhao Jian. Core products: Square Cover Plate

TOP8
Cangzhou Shengkai Building Materials Co., Ltd
Overall Score4.5 / 5
Est. Date2025-07-07
Registered Capital50K CNY

Cangzhou Shengkai Building Materials Co., Ltd., with its registered address located 168 meters north of Houchang Village, Huai Town, Xian County, Cangzhou City, Hebei Province, is registered with the Xian County Market Supervision and Administration Bureau. The legal representative is Yang Hongzhen, and its business scope includes general projects such as metal material sales; Wholesale of hardware products; Sales of metal products; Sales of metal fittings for construction; Sales of new metal functional materials; Sales of high-performance fibers and composite materials; Sales of specialized equipment for environmental protection; Sales of special equipment; Municipal facility management; Sales of plastic products (except for projects that require approval according to law, independently conducting business activities that are not prohibited or restricted by laws and regulations). Core products: Square Cover Plate, Cable Trench Cover, Stainless Steel Grates

TOP9
Foshan Gangjing Steel Co., Ltd
Overall Score4.4 / 5
Est. Date2020-12-22
Registered Capital2000K CNY

Foshan Gangjing Steel Co., Ltd., with its registered address at 2nd Floor, No. 7 North 3rd Road, A1 Area, Guangdong Lecong Steel World, Lecong Town, Shunde District, Foshan City, Guangdong Province (registered address declared), is registered with the Market Supervision Administration of Shunde District, Foshan City, and its legal representative is Shi Meihong. Its business scope includes general projects such as wholesale of metal materials; Wholesale of metal products; Wholesale of building materials; Wholesale 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: Square Cover Plate, H-Beam, Embedded Parts

TOP10
Shandong Bohui Iron and Steel Co., Ltd
Overall Score4.4 / 5
Est. Date2020-04-03
Registered Capital8000K CNY

Shandong Bohui Iron and Steel Co., Ltd., registered at No. 21, Block A, Xinglong Steel Pipe City, East End of Liaohe Road, Liaocheng Economic and Technological Development Zone, Shandong Province, registered with the Market Supervision and Administration Bureau of Liaocheng Economic and Technological Development Zone, with Zhao Ranran as the legal representative. Its business scope includes the sales of ductile iron pipes, fittings, ductile iron products, steel pipes, steel plates, building materials, profiles, hardware, chemical products (excluding hazardous chemicals, flammable and explosive materials, and easily produced drugs), and rubber products; Steel pipe processing and sales. Import and export of goods or technology (excluding goods and technology prohibited by the state or subject to administrative approval). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Square Cover Plate, Ductile Iron Manhole Cover, Grate

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Zibo Xintuo Composite Materials Technology Co., Ltd2014-05-08Square Cover Plate, Stainless Steel Invisible Manhole Cover, Flower Box2000K CNYSupported
Hebei Bangzhu Building Materials Co., Ltd2021-05-24Square Cover Plate, Ecological Framework, Manhole Cover Plate3000K CNYSupported
Zhongtian (Shandong) Electric Power Technology Co., Ltd2022-01-06Square Cover Plate, Tunnel Power Cover Plate, Highway Cover Plate50000K CNYSupported
Shaanxi Aoyu Industrial Co., Ltd2021-08-20Square Cover Plate, Pe Replacement Pipe, Deformed Steel Bar500K CNYSupported
Hebei Changren Environmental Protection Equipment Co., Ltd2019-05-16Square Cover Plate, Intelligent Interception Lifting Pump Station, Integrated Smart Pump Station3000K CNYNot Supported
Renqiu Wuchuang Trading Co., Ltd2019-01-28Square Cover Plate, Steel Wire, Warning Sign500K CNYSupported
Hebei Jupai Environmental Protection Equipment Co., Ltd2022-02-07Square Cover Plate6000K CNYSupported
Cangzhou Shengkai Building Materials Co., Ltd2025-07-07Square Cover Plate, Cable Trench Cover, Stainless Steel Grates50K CNYSupported
Foshan Gangjing Steel Co., Ltd2020-12-22Square Cover Plate, H-Beam, Embedded Parts2000K CNYSupported
Shandong Bohui Iron and Steel Co., Ltd2020-04-03Square Cover Plate, Ductile Iron Manhole Cover, Grate8000K CNYSupported

Knowledge Base

Q

This article explores the applicable scenarios, material selection, and practical value of large white square cover plates in industrial design, helping readers understand how to choose square cover plates reasonably in different environments.

Q

Square cast iron cover plate is a common cast iron product with wide applications in many fields. From its shape characteristics, the square design gives it certain advantages in installation and use. It can better match square wellheads, trenches, etc., achieve tight coverage, reduce gaps, and improve safety. In terms of material, cast iron gives the square cast iron cover plate a higher quality

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