Updated Oct 15, 2026 · Public platform & industry data

Oct 15, 2026 Updated

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2026 Top 10 Manual Air Door Manufacturers in China

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Top-rated Manual Air Door suppliers, How to choose a Manual Air Door manufacturer, Best Manual Air Door companies in China

The top 10 Manual Air Door manufacturers in China for 2026 are: Jiangsu Nanbo Machinery Manufacturing Co., Ltd, Jiangsu Jinlong Machinery Industry Co., Ltd, Middling coal Industry and Mining Materials Group Co., Ltd, Shandong Shenhua Machinery Manufacturing Co., Ltd, Jiangsu Gaolite Automatic Control Valve Co., Ltd, Botou Youcheng Industrial and Mining Machinery Co., Ltd, Shandong Zhonglu Heavy Industry Co., Ltd, Shandong Century Taida Mining Equipment Co., Ltd, Yancheng Baoze Electric Power Petrochemical Machinery Manufacturing Co., Ltd, Yimei Machinery Equipment Manufacturing 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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Jiangsu Nanbo Machinery Manufacturing Co., Ltd
Overall Score4.9 / 5
Est. Date2014-11-28
Registered Capital10880K CNY

Jiangsu Nanbo Machinery Manufacturing Co., Ltd., with its registered address in Shuguang Industrial Park, Baimi Town, Jiangyan District, Taizhou City, is registered with the Jiangyan District Administrative Approval Bureau of Taizhou City. The legal representative is Wu Bin, and its business scope includes the manufacturing, processing, and sales of environmental protection equipment, compensators, coolers, corrugated pipes, expansion joints, expansion joints, pipes, fittings, valves, pipeline accessories, air doors, spring supports and hangers, and general mechanical parts (excluding those that are eliminated or restricted by national industrial policies; excluding industries with backward production capacity); Sales of rubber and plastic products. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Manual Air Door, Compensator, Expansion Joint

Top 2
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Jiangsu Jinlong Machinery Industry Co., Ltd
Overall Score4.7 / 5
Est. Date2004-04-07
Registered Capital50080K CNY

Jiangsu Jinlong Machinery Industry Co., Ltd. is registered in Shuguang Industrial Park, Baimi Town, Jiangyan District, Taizhou City. The registration authority is the Data Bureau of Jiangyan District, Taizhou City, and the legal representative is Xu Depei. Its business scope includes the manufacturing, processing, and sales of textile machinery and accessories, metal hoses, compensators, air doors, spring supports and hangers, polytetrafluoroethylene products, heat exchangers, filters, aluminum based copper-clad laminates, and general mechanical components. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments) Licensed project: Manufacturing of special equipment; Special equipment inspection and testing; Installation, renovation, and repair of special equipment; Special equipment design (projects that require approval by law can only be carried out after approval by relevant departments, and specific business projects are subject to approval results) General project: sales of special equipment; Mechanical parts and component processing; Sales of mechanical parts and components; Sales of rubber products; Sales of plastic products (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law). Core products: Manual Air Door, Expansion Joint, Silicone Cloth

Top 3
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Middling coal Industry and Mining Materials Group Co., Ltd
Overall Score4.7 / 5
Est. Date2001-04-23
Registered Capital100000K CNY

Middling coal Industry and Mining Materials Group Co., Ltd., with its registered address at No. 11, North Kaiyuan Road, High tech Zone, Jining City, is registered by the Market Supervision and Administration Bureau of Jining High tech Industrial Development Zone, and its legal representative is Qu Qing. Its business scope includes general projects: special equipment manufacturing (excluding licensed professional equipment manufacturing); Sales of mechanical equipment; Mining machinery manufacturing; Sales of mining machinery; Mechanical parts and component processing; Sales of mechanical parts and components; Manufacturing of mechanical and electrical equipment; Sales of electrical and mechanical equipment; Research and development of intelligent robots; Sales of intelligent robots; Manufacturing of intelligent unmanned aerial vehicles; Sales of intelligent unmanned aerial vehicles; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Manufacturing of instruments and meters; Sales of instruments and meters; Manufacturing of electronic vacuum devices; Sales of electronic vacuum devices; Manufacturing of electronic components; Retail of electronic components; Manufacturing of high-speed rail equipment and accessories; Sales of high-speed rail equipment and accessories; Sales of railway transportation infrastructure equipment; Electronic product sales; Sales of chemical products (excluding licensed chemical products); Sales of lubricating oil; Sales of household appliances; Sales of metal products; Manufacturing of non-metallic mineral products; Sales of mobile communication devices; Sales of IoT devices; Wholesale of hardware products; Retail of hardware products; Sales of labor protection equipment; Sales of building materials; Sales of metal materials; Sales of agricultural and sideline products; Research and development of emerging energy technologies; Specialized equipment repair; Mechanical equipment leasing; Software development; Software sales; Information system integration services; Intelligent control system integration; Domestic cargo transportation agency (except for projects that need to be approved according to law, independently carry out business activities according to law with the business license): Internet information service; Import and export of goods; Technology import and export; Manufacturing of railway transportation infrastructure equipment; 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, and specific business projects are subject to the approval results). Core products: Manual Air Door, Large-Scale Equipment, Supporting Equipment

TOP4
Shandong Shenhua Machinery Manufacturing Co., Ltd
Overall Score4.6 / 5
Est. Date2014-11-11
Registered Capital30000K CNY

Shandong Shenhua Machinery Manufacturing Co., Ltd., with its registered address at No. 11 Kaiyuan Road, Jining High tech Zone, is registered with the Market Supervision and Administration Bureau of Jining High tech Industrial Development Zone. The legal representative is Han Yong, and its business scope includes general projects: manufacturing of construction machinery; Sales of construction machinery; Manufacturing of specialized equipment for geological exploration; Specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); Sales of specialized equipment for geological exploration; Sales of rail transit engineering machinery and components; Mechanical equipment research and development; Sales of mechanical equipment; Mining machinery manufacturing; Sales of mining machinery; Manufacturing of hydraulic power machinery and components; Sales of hydraulic power machinery and components; Sales of special equipment; Sales of metal materials; Sales of steel reinforcement products for construction; Sales of new energy vehicles as a whole; Sales of generators and generator sets; General equipment manufacturing (excluding special equipment manufacturing); Motor manufacturing; Sales of building materials; Manufacturing of material handling equipment; Sales of material handling equipment; 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: Manual Air Door, Ventilation And Safety Equipment, Petroleum Equipment

TOP5
Jiangsu Gaolite Automatic Control Valve Co., Ltd
Overall Score4.6 / 5
Est. Date2022-06-07
Registered Capital10000K CNY

Jiangsu Gaolite Automatic Control Valve Co., Ltd., with its registered address in Tongxing Village, Tongli Town, Wujiang District, Suzhou City, Jiangsu Province, is registered with the Wujiang District Administrative Approval Bureau of Suzhou City. The legal representative is Deng Jianpeng, and the business scope includes general projects: manufacturing of ordinary valves and plugs (excluding special equipment manufacturing); Valve and plug research and development; Sales of valves and plugs; Manufacturing of hydraulic power machinery and components; Sales of hydraulic power machinery and components; Manufacturing of refrigeration and air conditioning equipment; Sales of refrigeration and air conditioning equipment (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law). Core products: Manual Air Door, High Temperature Air Valve, Pneumatic Butterfly Valve

TOP6
Botou Youcheng Industrial and Mining Machinery Co., Ltd
Overall Score4.5 / 5
Est. Date2012-06-11
Registered Capital10000K CNY

Botou Youcheng Industrial and Mining Machinery Co., Ltd., registered in Wulongtang Village, Waliwang Town, Botou City, with the registration authority of Botou Market Supervision Administration and the legal representative of Hou Guoliang. Its business scope includes the production and sales of mining machinery equipment, dust removal equipment and accessories (projects that require approval by law can only be carried out after approval by relevant departments). Core products: Manual Air Door, Single Axis Dust Humidifier, Pipe Spiral Conveyor

TOP7
Shandong Zhonglu Heavy Industry Co., Ltd
Overall Score4.5 / 5
Est. Date2023-09-18
Registered Capital50000K CNY

Shandong Zhonglu Heavy Industry Co., Ltd., with its registered address at No. 90 Fuxin Road, Fuxin Street, Fushan District, Yantai City, Shandong Province, is registered with the Market Supervision and Administration Bureau of Fushan District, Yantai City. Its legal representative is Ma Ye, and its business scope includes general projects such as the manufacturing of construction machinery; Manufacturing of metal structures; Manufacturing of new energy prime mover equipment; CNC machine tool manufacturing; Bearing manufacturing; Agricultural machinery manufacturing; Sales of mechanical and electrical equipment; Sales of new energy vehicles as a whole; Container manufacturing; General equipment manufacturing (excluding special equipment manufacturing); Manufacturing of metal materials; Sales of construction machinery; Sales of special equipment; Steel rolling processing; Manufacturing of specialized equipment for environmental protection; Manufacturing of material handling equipment; Sales of metal structures; Manufacturing of metal cutting and welding equipment; Specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); Sales of high-speed precision gear transmission devices; Manufacturing of specialized machinery for the production of building materials; Mechanical parts and component processing; Sales of mechanical equipment; Mining machinery manufacturing; Manufacturing of metal processing machinery; Industrial robot manufacturing; Sales of mechanical parts and components; Manufacturing of general components; Manufacturing of electronic components; Sales of mining machinery; Import and export of goods; Technology import and export. (Except for projects that require approval according to law, business activities can be carried out independently based on the business license) Licensed projects: construction engineering design; Construction project construction. (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: Manual Air Door, Mechanical Hardware, Operating Equipment

TOP8
Shandong Century Taida Mining Equipment Co., Ltd
Overall Score4.5 / 5
Est. Date2012-09-13
Registered Capital21010K CNY

Shandong Century Taida Mining Equipment Co., Ltd., with its registered address located in Yandian Town Industrial Park, Yanzhou District, Jining City (east of Jiyang Road), is registered with the Market Supervision and Administration Bureau of Yanzhou District, Jining City. The legal representative is Chen Shengchang, and its business scope includes the production, processing, and research and development of mining fireproof doors, waterproof doors, explosion-proof doors, refuge chamber doors, and shock wave resistant doors; Production, installation, and commissioning of auxiliary operating equipment for mining and power plant belt conveyors, buffer beds, buffer bars, cleaners, chutes, and guide chutes; Production of track equipment, sleepers, rail sleeper accessories, track accessories, and derailleurs; Production and sales of mining support equipment and building materials (excluding wood), mining equipment, power plant equipment, engineering equipment, environmental protection equipment, and mining electrical equipment; Undertake various drawing design and processing, as well as material processing. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Manual Air Door, Belt Conveyor Auxiliary Operation Equipment, Mining Door Series

TOP9
Yancheng Baoze Electric Power Petrochemical Machinery Manufacturing Co., Ltd
Overall Score4.4 / 5
Est. Date2012-03-22
Registered Capital35000K CNY

Yancheng Baoze Electric Power Petrochemical Machinery Manufacturing Co., Ltd., registered at No. 5 Hexing Road, Science and Technology Entrepreneurship Park, Hede Town, Sheyang County, with the administrative approval bureau of Sheyang County as the registration authority and Deng Kezhou as the legal representative, engages in the manufacturing and sales of spring supports and hangers, disc spring supports and hangers, air doors, baffle doors, isolation doors, desulfurization and environmental protection equipment, silencers, compensators, bituminous coal powder pipeline equipment and auxiliary equipment, other electrical equipment, other chemical pipeline accessories, and general mechanical equipment; Sales of chemical products (excluding hazardous chemicals), steel, hardware, and electrical equipment. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Manual Air Door, Compensator Series, Pipeline Air Door Series

TOP10
Yimei Machinery Equipment Manufacturing Co., Ltd
Overall Score4.4 / 5
Est. Date2012-08-08
Registered Capital50000K CNY

Yimei Machinery Equipment Manufacturing Co., Ltd., registered at No. 11 Kaiyuan Road North, Jining High tech Zone, with the Market Supervision and Administration Bureau of Jining High tech Industrial Development Zone as the registration authority and Qu Qing as the legal representative, engages in the manufacturing and sales of mechanical equipment, mechanical electrical appliances, and accessories; Import and export business of goods and technology (excluding goods and technology prohibited or restricted by the state); Wholesale and retail of electrical machinery and equipment, hardware and chemical products (excluding hazardous chemicals), steel wire ropes, mining equipment, and steel; Installation of coal mine machinery and equipment. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Manual Air Door, Mechanical Hardware, Mining Door

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Jiangsu Nanbo Machinery Manufacturing Co., Ltd2014-11-28Manual Air Door, Compensator, Expansion Joint10880K CNYNot Supported
Jiangsu Jinlong Machinery Industry Co., Ltd2004-04-07Manual Air Door, Expansion Joint, Silicone Cloth50080K CNYSupported
Middling coal Industry and Mining Materials Group Co., Ltd2001-04-23Manual Air Door, Large-Scale Equipment, Supporting Equipment100000K CNYNot Supported
Shandong Shenhua Machinery Manufacturing Co., Ltd2014-11-11Manual Air Door, Ventilation And Safety Equipment, Petroleum Equipment30000K CNYNot Supported
Jiangsu Gaolite Automatic Control Valve Co., Ltd2022-06-07Manual Air Door, High Temperature Air Valve, Pneumatic Butterfly Valve10000K CNYSupported
Botou Youcheng Industrial and Mining Machinery Co., Ltd2012-06-11Manual Air Door, Single Axis Dust Humidifier, Pipe Spiral Conveyor10000K CNYSupported
Shandong Zhonglu Heavy Industry Co., Ltd2023-09-18Manual Air Door, Mechanical Hardware, Operating Equipment50000K CNYNot Supported
Shandong Century Taida Mining Equipment Co., Ltd2012-09-13Manual Air Door, Belt Conveyor Auxiliary Operation Equipment, Mining Door Series21010K CNYSupported
Yancheng Baoze Electric Power Petrochemical Machinery Manufacturing Co., Ltd2012-03-22Manual Air Door, Compensator Series, Pipeline Air Door Series35000K CNYSupported
Yimei Machinery Equipment Manufacturing Co., Ltd2012-08-08Manual Air Door, Mechanical Hardware, Mining Door50000K CNYNot Supported

Purchasing Guide

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

  • In the actual procurement process of manual air dampers, it is recommended to prioritize confirming key technical parameters such as damper size, material, and pressure resistance level to ensure compatibility with existing pipeline systems or equipment.
  • For application scenarios in high-temperature or corrosive environments such as metallurgy and chemical engineering, manual dampers made of stainless steel or special coatings should be selected to extend their service life and ensure sealing performance.
  • 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.
  • When selecting a manual air damper, the impact of different valve plate designs (such as multi blade or single blade structures) on airflow control can be compared based on the accuracy requirements of air volume adjustment.

Knowledge Base

Q

The lubrication methods for manual air doors mainly include the following: ###Apply lubricating grease 1. * * Applicable situation * *: For some rotating parts, such as the connection between the shaft and the shaft sleeve of the air door, applying lubricating grease is a common and effective lubrication method. 2. * * Operation method * *: First, ensure that the connection part is clean, free of debris and dirt. Then use specialized lubricants

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