2026 Top 10 Test Stub Manufacturers in China

Hebei Ruixin Hengtong Pipeline Equipment Manufacturing Co., Ltd

Hebei Ruixin Hengtong Pipeline Equipment Manufacturing Co., Ltd., registered at No. 19, Hongmiao Village North, Xiaowangzhuang Town, Yunhe District, Cangzhou City, Hebei Province, with the registration authority of Cangzhou Market Supervision Administration and the legal representative of Han Jianzhen, engages in the manufacturing and sales of steel pipes and fittings; Sales: Hardware products, building materials (excluding sand and gravel); Import and export of goods. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments)**. Core products: Test Stub, Warning Board, Steel Pipe Warning Column

Hebei Luzhan Transportation Facilities Co., Ltd

Hebei Luzhan Transportation Facilities Co., Ltd., with its registered address at Workshop 3, Cangzhou Steel Rolling Plant, No. 11 Huanghe Middle Road, Yunhe District, Cangzhou City, Hebei Province, is registered with the Market Supervision and Administration Bureau of Yunhe District, Cangzhou City. The legal representative is Zhao Xiaoying, and the business scope includes general projects such as transportation facility maintenance; Manufacturing of glass fiber reinforced plastic products; Manufacturing of metal signs for transportation and public management; Steel rolling processing. (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: Test Stub, Gas Barrier, Rubber Car Stopper

Henan Yake Special Equipment Manufacturing Co., Ltd

Henan Yake Special Equipment Manufacturing Co., Ltd., with its registered address at No. 178 Matou Village, Gebukou Township, Yuanyang County, Xinxiang City, Henan Province, is registered with the Market Supervision Administration of Yuanyang County, Xinxiang City. The legal representative is Li Chenyang, and its business scope includes general projects such as mechanical and electrical equipment manufacturing; Research and development of new material technology; Promotion services for new material technology; Research and development of distribution switch control equipment; Engineering and technical research and experimental development; Basic software development for artificial intelligence; Development of rail transit operation management system; Research and development of metal products; Rolling and processing of non-ferrous metals; Manufacturing of non-ferrous metal alloys; Steel rolling processing; Manufacturing of high-performance fibers and composite materials; General equipment manufacturing (excluding special equipment manufacturing); Sales of metal products; Sales of artificial intelligence hardware; Information system integration services; Manufacturing of electronic specialized equipment; Manufacturing of electronic components and electromechanical equipment; Maintenance of electronic and mechanical equipment (excluding special equipment); Manufacturing of IoT devices; Manufacturing of electronic (gas) physical equipment and other electronic devices; Manufacturing of electronic specialized materials; Sales of civil aviation materials; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Manufacturing of specialized instruments for navigation, surveying, meteorology, and oceanography; Manufacturing of satellite mobile communication terminals; Manufacturing of communication equipment; Manufacturing of electrical signal equipment devices; Manufacturing of geological exploration and seismic specialized instruments; Professional repair of radar and radio navigation equipment; Sales of anti-corrosion materials (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: Test Stub, Intelligent Potential Acquisition Device, Spark Gap Protector

Langfang Guibai Petroleum Pipeline Equipment Co., Ltd

Langfang Guibai Petroleum Pipeline Equipment Co., Ltd., with its registered address at No. 1301, 13th floor, Unit 1, Building 2, Rongting, Guangyang District, Langfang City, is registered with the Market Supervision and Administration Bureau of Guangyang District, Langfang City. The legal representative is Wang Chunguang, and its business scope includes general projects such as sales of specialized equipment for petroleum drilling and production; Sales of rubber products; Sales of seals; Sales of synthetic materials; Sales of plastic products; Wholesale of hardware products; Sales of specialized equipment for environmental protection; Sales of special labor protection equipment; Sales of specialized packaging equipment; Sales of fireproof sealing materials; Sales of building decoration materials; Sales of electrical equipment; Sales of generators and generator sets; Sales of mechanical and electrical equipment; Sales of wind and electric tools; Sales of metal cutting and welding equipment; Sales of painting equipment; Sales of steel reinforcement products for construction; Sales of metal materials; Sales of metal products; Sales of non-metallic minerals and products; Sales of specialized equipment for semiconductor devices; Sales of semiconductor discrete devices; Sales of magnetic materials; Sales of coatings (excluding hazardous chemicals); Sales of anti-corrosion materials; Sales of firefighting equipment; Sales of mechanical equipment; Sales of pneumatic power machinery and components; Sales of hydraulic power machinery and components; Sales of electrical equipment; Sales of distribution switch control equipment; Sales of communication equipment; Electronic product sales; Sales of power facilities and equipment; Sales of photovoltaic equipment and components; Sales of power electronic components; Sales of intelligent material handling equipment; Maintenance of electronic and mechanical equipment (excluding special equipment); Installation services for ordinary mechanical equipment; Home appliance installation services; Sales of pipeline transportation equipment; Oil and gas technology services; Professional design services; Import and export of goods; Domestic freight forwarding agent. (Except for projects that require approval according to law, business activities can be carried out independently based on the business license) Licensed project: Electrical installation services. (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: Test Stub, Anti Corrosion Adhesive Tape, Wheel Bracket

Cangzhou Judun Pipeline Protection Equipment Co., Ltd

Cangzhou Judun Pipeline Protection Equipment Co., Ltd., registered in Zhongrong Village, Qiantong Town, Yanshan County, with the registration authority of Yanshan County Market Supervision and Administration Bureau and the legal representative of Zhang Jianchao, is engaged in the sales and construction of general projects including alloy lifting poles, pipeline electromagnetic interference protection, exothermic welding materials, and lightning protection products; Technical services and engineering construction in the field of corrosion control and safety; Production and sales of cathodic protection and anti-corrosion materials, instruments, equipment, and their products; Production and sales of fiberglass products, cement products, plastic products, metal products, and insulation pipeline materials; Import and export of goods or technology. (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: Test Stub, Flexible Anode, Long Term Copper Sulfate Reference Electrode

Jiaozuo Libo Light Alloy Co., Ltd

Jiaozuo Libo Light Alloy Co., Ltd., with its registered address located 70 meters south of Yangkui Road, Anzhang Village, Dahongqiao Township, Wuzhi County, is registered with the Market Supervision Administration of Wuzhi County. The legal representative is Yang Yangyang, and its business scope includes general projects such as non-ferrous metal alloy manufacturing; Sales of anti-corrosion materials; Rolling and processing of non-ferrous metals; Sales of high-performance non-ferrous metals and alloy materials; General equipment manufacturing (excluding special equipment manufacturing); Engineering and technical services (excluding planning management, survey, design, and supervision); Oil and gas technology services; Operation of wires and cables; Manufacturing of ocean energy systems and equipment; Sales of electrical instruments and meters; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Import and export of goods (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: Test Stub, Zinc Anode, Magnesium Anode

Jiaozuo Diman Anti corrosion Materials Co., Ltd

Jiaozuo Diman Anti corrosion Materials Co., Ltd., with its registered address in Yizhuang Village, Beiguo Township, Wuzhi County, is registered with the Wuzhi County Market Supervision and Administration Bureau. The legal representative is Wang Fan, and its business scope includes the distribution of zinc alloys, aluminum alloys, cathodic protection materials and supporting products, as well as chemical materials (excluding those controlled by the state)**. Core products: Test Stub, Carbon Steel Test Pile, Aluminum Alloy