2026 Top 10 Manual Plug-In Door Manufacturers in China

Xinhe County Yunxing Water Conservancy Machinery Factory

Yunxing Water Conservancy Machinery Factory in Xinhe County, Xingtai City, Hebei Province, with its registered address in Baishenshou Village, Xinhe County. The registration authority is the Xinhe County Market Supervision and Administration Bureau, and the legal representative is Dong Jianli. Its business scope includes the production, sales, installation, and maintenance of hoists, gates, gates, trash racks, cleaning machines, conveyors, electric hoists, hydraulic dams, steel dams, rubber dams, flap doors, pressure steel pipes, valves, hydraulic equipment, oil filters, gabion nets, corrugated pipes, and hydraulic metal structural components; Sales of environmental protection equipment, cranes, control cabinets, axial flow pumps, mixed flow pumps, submersible pumps, motors, cables, rubber waterstops, closed cell foam plates, bridge bearings, bridge expansion joints, geotextiles, geomembranes, and FRP products; Anti corrosion engineering construction, water conservancy and hydropower engineering, building construction engineering, municipal engineering, building decoration engineering, earthwork engineering, foundation and foundation engineering, mechanical and electrical equipment installation engineering, landscaping engineering. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Manual Plug-In Door, Gate, Water Blocking Valve

Rigao Holdings Group Co., Ltd. Wenzhou Branch

Bali Village, Qiaoxia Town, Yongjia County, Wenzhou City, Zhejiang Province (within Yongjia Yuanquan Environmental Protection Technology Co., Ltd.)

RiGao Holdings Group Co., Ltd. Wenzhou Branch, located in Bali Village, Qiaoxia Town, Yongjia County, Wenzhou City, Zhejiang Province (within Yongjia County Yuanquan Environmental Protection Technology Co., Ltd.), was established on October 19, 2022. The registration authority is Yongjia County Market Supervision Administration, and the legal representative is Yang Jiankang. Core products: Manual Plug-In Door, Electric Dust Gas Wear-Resistant Butterfly Valve, Gate Valve

Jiangsu Chengzhu Machinery Technology Co., Ltd

Jiangsu Chengzhu Machinery Technology Co., Ltd., with its registered address at 9A Daxing South Road, Industrial Park, Hede Town, Sheyang County, is registered with the Sheyang County Administrative Approval Bureau and represented by Gao Jianxiang. Its business scope includes research and development, manufacturing, and sales of power machinery parts, chemical machinery parts, and environmental protection equipment; Environmental engineering design and construction. Wholesale of metal materials; (For projects that require approval by law, business activities can only be carried out after approval by relevant departments) General projects: wholesale of metal materials; Manufacturing of mechanical and electrical equipment; Sales of electrical equipment; General equipment manufacturing (excluding special equipment manufacturing); Sales of pipeline transportation equipment; Manufacturing of metal structures; Sales of metal structures; Manufacturing of metal materials; Research and development of metal products; Manufacturing of metal chains and other metal products; Sales of metal chains and other metal products; 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: Manual Plug-In Door, Baffle Gate, Air Door

Cangzhou Hongyi Environmental Protection Equipment Co., Ltd

Cangzhou Hongyi Environmental Protection Equipment Co., Ltd. is registered in Guoqian Village, Wangwu Town, Botou City, Cangzhou City, Hebei Province. The registration authority is the Botou Market Supervision Administration Bureau, and the legal representative is Wang Yang. Its business scope includes the manufacturing of specialized environmental protection equipment. Research and development, manufacturing, sales, and maintenance of dust treatment equipment, exhaust gas treatment equipment, sewage treatment equipment, and environmental protection equipment accessories; Environmental engineering contracting, construction, and installation; Design of environmental protection engineering and air pollution control engineering; Development, design, and promotion of new technologies for energy-saving products; Import and export of goods (projects that require approval by law can only be carried out after approval by relevant departments). Core products: Manual Plug-In Door, Pulse Dust Collector, Dust Collection Filter Bag

Cangzhou Puhang Pipeline Manufacturing Co., Ltd

Cangzhou Puhang Pipeline Manufacturing Co., Ltd., with its registered address in Fanzhuang Village, Yanshan Town, Yanshan County, is registered with the Yanshan County Market Supervision and Administration Bureau, and its legal representative is Zhang Mengyao. Its business scope includes the manufacturing of pipe materials, pipe accessories, pipe supports and hangers, power plant accessories, pipe fittings series products, branch pipe platforms, pipe sockets, flanges, sockets, forged pipe fittings, ventilation caps, floor drains, funnels, rainwater hoppers, sleeves, pipe clamps, and building pipe fittings; Wear resistant, ceramic, and corrosion-resistant pipe fittings; Air door, baffle door, plug-in door, manhole; Open the blind plate quickly, send and receive the ball cylinder. Selling hardware products; Import and export business of goods. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Manual Plug-In Door, Manhole, Cone Hood

Cangzhou Zhongnuo Machinery Manufacturing Co., Ltd

Cangzhou Zhongnuo Machinery Manufacturing Co., Ltd. is registered at No. 1 Road, Industrial Zone, Botou City, Liduli Village, Waliwang Town, Botou City. The registration authority is Botou Market Supervision Administration Bureau, and the legal representative is Yang Ping. The business scope includes the manufacturing of environmental protection special equipment. Dust removal equipment and accessories, complete sets of conveying equipment and accessories, screw conveyors, shut-off fans, exhaust gas treatment equipment, corrugated pipe compensators, metal hoses, valves and pipeline accessories, protective equipment, filters, hardware tools, boiler accessories, production, processing, installation, and sales of mechanical and electrical products; 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: Manual Plug-In Door, Heavy Hammer Flap Valve, Screw Conveyor

Hebei Bolin Environmental Protection Technology Co., Ltd

Hebei Bolin Environmental Protection Technology Co., Ltd., with its registered address located 150 meters south of Zhangsan Overpass in Beihuan, Botou Economic Development Zone, Cangzhou City, Hebei Province, is registered with the Botou Market Supervision Administration Bureau and represented by Gao Jingya as its legal representative. Its business scope includes general projects such as environmental protection technology promotion services. Research and development, manufacturing, maintenance, and sales of dust removal equipment and accessories, cloth bags, bag cages, unloaders, air doors, baffle doors, ventilation butterfly valves, exhaust gas treatment equipment, supports and hangers, manholes, explosion-proof valves, solenoid valves, metal compensators, sleeve compensators, metal hoses, non-metal compensators, conveying equipment and accessories, plug valves, and flap valves. (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: Manual Plug-In Door, Air Door, Manhole