2026 Top 10 Rectangular Duct Manufacturers in China

Nanjing Guanguantong Environmental Protection Ventilation Equipment Co., Ltd

Nanjing Guanguantong Environmental Protection and Ventilation Equipment Co., Ltd., registered at Room 101, Building 6, Zone 6, Nanjing International Small Commodity City, No. 2 Qinlu Avenue, Lukou Street, Jiangning District, Nanjing City (Jiangning Development Zone), registered with the Jiangning District Administrative Approval Bureau of Nanjing City, with Guo Linmao as the legal representative. Its business scope includes the sales, installation, and maintenance of environmental protection equipment, ventilation equipment, HVAC equipment, security equipment, fire-fighting equipment, and accessories; Sales, installation, and maintenance of blowers and pipeline pumps; Design and installation of central air conditioning system and ventilation system; Sales of air compressors, valves, wires and cables, bearings, steel, environmentally friendly materials, and insulation materials; Sales and installation services for air vents, fans, fan cases, fire dampers, ventilation fans, air volume control valves, plate exhaust outlets, mufflers, corner horses and oil fume purifiers, spiral ducts, cable trays, tees. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Rectangular Duct, Welding Air Duct, Duct Fittings

Wuhan Dongzhuo Ventilation Equipment Co., Ltd

Wuhan Dongzhuo Ventilation Equipment Co., Ltd., with its registered address at 1-3 #, Building 1, Hebaohu Farm, Dongxihu District, Wuhan City. The registration authority is the Market Supervision and Administration Bureau of Dongxihu District, Wuhan City, and the legal representative is Wang Changhai. The company's business scope includes general projects such as metal material manufacturing, pipeline transportation equipment sales, refrigeration and air conditioning equipment sales, metal cutting processing services, fan and fan sales, valve and plug sales, metal structure sales, metal material sales, metal product sales, anti-corrosion material sales, insulation material sales, hardware product wholesale, hardware product retail, refractory material production, refractory material sales, building material sales, lightweight building material manufacturing, building waterproofing membrane product manufacturing, lightweight building material sales, engineering and technical research and experimental development, new type of building materials sales. Manufacturing of building materials (excluding hazardous chemicals), Engineering and technological research and experimental development (excluding the development and application of human stem cells, gene diagnosis and treatment technologies, rare and unique precious and excellent varieties in China). (Except for licensed businesses, projects that are not prohibited or restricted by laws and regulations can be operated independently in accordance with the law.) Licensed projects: construction projects, construction labor subcontracting. (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: Rectangular Duct, Cabinet Centrifugal Fan, Window Blinds

Baoding Tangge Environmental Protection Equipment Technology Co., Ltd

Baoding Tanggesi Environmental Protection Equipment Technology Co., Ltd., with its registered address in Donglu Village, Donglu Township, Qingyuan District, Baoding City, Hebei Province, is registered with the Qingyuan District Market Supervision and Administration Bureau, and its legal representative is Jiekang. Its business scope includes research and development, manufacturing, sales, and installation of environmental protection equipment; Mechanical equipment leasing. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Rectangular Duct, Ventilation Duct, Polypropylene Pipe

Chongqing Fengchi Environmental Protection Technology Co., Ltd

Chongqing Fengchi Environmental Protection Technology Co., Ltd. is registered at No. 28 Fenghuang 2nd Road, Fenghuanghu Industrial Park, Yongchuan District, Chongqing. The registration authority is the Market Supervision Administration of Yongchuan District, Chongqing, and the legal representative is Liang Shunming. The business scope includes licensed projects such as construction projects. (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 of relevant departments.) General projects: technical services, technology development, technology consulting, technology exchange, technology transfer, technology promotion; Environmental consulting services; External contracting projects; Air pollution prevention and control services; Specialized equipment repair; Steel rolling processing; Loading and unloading handling; Sales of specialized equipment for environmental protection; Manufacturing of specialized equipment for environmental protection; Noise and vibration control services; Manufacturing of architectural decoration, plumbing components, and other metal products for building use; Manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Maintenance of electronic and mechanical equipment (excluding special equipment); Professional design services; Water pollution prevention and control services; Sales of vibration and noise reduction equipment; Sales of metal materials; Installation services for ordinary mechanical equipment; Research and development of new material technology; Sales of plastic products; Manufacturing of specialized equipment for plastic processing; Sales of specialized equipment for plastic 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: Rectangular Duct, Exhaust Gas Exhaust Duct, Exhaust Gas Spray Tower

Anhui Hongyuan Ventilation Equipment Co., Ltd

Anhui Hongyuan Ventilation Equipment Co., Ltd., registered at Building 5, Hefei Haiyin Tower Co., Ltd., Daguo Road, Cuozhen Town, Feidong County, Hefei City, Anhui Province, registered with Feidong County Market Supervision and Administration Bureau, with Zhong Ziming as the legal representative. Its business scope includes HVAC equipment, ventilation equipment and accessories, refrigeration equipment assembly, sales, maintenance and installation; Production of common boards, air ducts, spiral air ducts and accessories, corner codes, flanges, shock absorbers, oil fume purifiers, fans, insulation materials, wires and cables, hardware and electrical equipment, communication equipment, electronic equipment, electromechanical equipment, rubber sheets, ventilation equipment, valves, pipelines, cable trays, labor protection supplies, steel, building materials, and decoration materials sales; Sales and installation of environmental protection systems and security systems. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Rectangular Duct, Flange, Stainless Steel Air Duct - Welded Air Duct

Chongqing Darun Ventilation Equipment Co., Ltd

Chongqing Darun Ventilation Equipment Co., Ltd., registered at Society 6, Shanxi Village, Tiaodeng Town, Dadukou District, Chongqing, registered with the Market Supervision and Administration Bureau of Dadukou District, Chongqing, with Li Kailong as the legal representative. Its business scope includes processing and sales of ventilation equipment, aluminum alloy products, fans, and valves; Sales: HVAC equipment. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments)**. Core products: Rectangular Duct, Smoke Exhaust Duct, Ventilation Duct

Guangzhou Yingyi Metal Products Co., Ltd

Guangzhou Yingyi Metal Products Co., Ltd., with its registered address at No. 4, Xinzhang Road, Xinwei Industrial Zone, Xinwei Village, Xintang Town, Zengcheng District, Guangzhou City, is located in the first three and a half of the third row. The registration authority is the Market Supervision Administration of Zengcheng District, Guangzhou City, and the legal representative is Zou Xingping. Its business scope includes metal structure manufacturing; Coating and spraying of hardware products; Manufacturing and processing of hardware accessories; Installation and construction of road signs, road signs, and billboards; Wholesale of metal products; Hardware retail;. Core products: Rectangular Duct, Galvanized Angle Iron Flange, Single Layer Louver Air Outlet