Updated Oct 8, 2026 · Public platform & industry data

Oct 8, 2026 Updated

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2026 Top 10 Drainage Cap Manufacturers in China

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Top-rated Drainage Cap suppliers, How to choose a Drainage Cap manufacturer, Best Drainage Cap companies in China

The top 10 Drainage Cap manufacturers in China for 2026 are: Yixing Weiya Environmental Protection Packing Factory, Jiangsu Nantai Environmental Protection Packing Co., Ltd, Hebei Xiangqing Plastic Products Co., Ltd, Yixing Yilan Environmental Protection Equipment Co., Ltd, Henan Chengying Environmental Protection Technology Co., Ltd, Henan Yimeijia Environmental Protection Technology Co., Ltd, Qingzhou New Dashui Treatment Technology Co., Ltd, Yixing Sumeng Environmental Protection Packing Co., Ltd, Yixing Shengquan Water Treatment Equipment Co., Ltd, Yixing Qingxi Environmental Protection Packing 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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Yixing Weiya Environmental Protection Packing Factory
Overall Score4.9 / 5
Est. Date2010-03-30
Registered Capital5000K CNY

Yixing Weiya Environmental Protection Packing Factory, with its registered address at No. 278 Ezhou South Road, Heqiao Town, Yixing City, registered with the Yixing Administrative Approval Bureau, and represented by Yang Junwei as its legal representative. Its business scope includes the manufacturing and sales of environmental protection fillers and water treatment equipment; Sales of environmental protection equipment and accessories; Design and construction of environmental protection projects. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Drainage Cap, Elastic Filler, Short Stem Filter Head

Top 2
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Jiangsu Nantai Environmental Protection Packing Co., Ltd
Overall Score4.7 / 5
Est. Date2010-05-25
Registered Capital10600K CNY

Jiangsu Nantai Environmental Protection Filling Co., Ltd., registered at No. 18 Zhongqiao Road, Gaocheng Town, Yixing City, with the registration authority of Yixing Data Bureau and the legal representative of Du Shunming, has a business scope including general projects: sales of plastic products; Manufacturing of plastic products; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Sales of mechanical equipment; General equipment manufacturing (excluding special equipment manufacturing); Ordinary mechanical equipment installation services (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: Drainage Cap, Biochemical Treatment Of Industrial Wastewater, Single Pore Membrane Aeration Head

Top 3
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Hebei Xiangqing Plastic Products Co., Ltd
Overall Score4.7 / 5
Est. Date2017-06-20
Registered Capital10000K CNY

Hebei Xiangqing Plastic Products Co., Ltd., registered address at 5-2, South District, No. 888 Kaiyuan Road, Jizhou District, Hengshui City, Hebei Province; Multiple locations for one photo: Factory Building 3-5-4, No. 999 Kaiyuan Road, Jizhou District, Hengshui City, registered with the Jizhou District Market Supervision and Administration Bureau, with Ma Jinsong as the legal representative. The business scope includes general projects such as plastic product manufacturing; Sales of plastic products; Manufacturing of glass fiber reinforced plastic products; Sales of glass fiber reinforced plastic products; Sales of plastic packaging containers, tools and products for food; Sales of metal products; Rubber product manufacturing; Sales of rubber products; Installation services for ordinary mechanical equipment; Specialized equipment repair; Import and export of goods; Technology import and export; Foreign contracted projects (except for projects that require approval according to law, business activities can be carried out independently based on the business license) License project: production of plastic packaging containers, tools and products for food; Construction labor subcontracting; Construction project construction (for projects that require approval by law, business activities can only be carried out after approval by relevant departments. Specific business projects are subject to approval documents or permits). Core products: Drainage Cap, Seedling Tray, Environment Protection

TOP4
Yixing Yilan Environmental Protection Equipment Co., Ltd
Overall Score4.6 / 5
Est. Date2009-05-11
Registered Capital5800K CNY

Yixing Yilan Environmental Protection Equipment Co., Ltd. is located in the Industrial Concentration Zone of Gaocheng Town, Yixing City. The registration authority is the Yixing Administrative Approval Bureau, and the legal representative is Lu Junrong. Its business scope includes the manufacturing and sales of environmental pollution prevention and control equipment, fiberglass products, pipe valves, environmental protection fillers, environmental protection equipment and accessories. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Drainage Cap, Fine Bubble Diffuser , Mechanical Grating

TOP5
Henan Chengying Environmental Protection Technology Co., Ltd
Overall Score4.6 / 5
Est. Date2021-06-03
Registered Capital6000K CNY

Henan Chengying Environmental Protection Technology Co., Ltd. is located 500 meters south of the intersection of Township Road 030 and National Highway 310 in Beishankou Town, Gongyi City, Zhengzhou City, Henan Province. It was established on June 3, 2021, with the registration authority of Gongyi Market Supervision Administration and the legal representative being Wang Huaiyan. Core products: Drainage Cap

TOP6
Henan Yimeijia Environmental Protection Technology Co., Ltd
Overall Score4.5 / 5
Est. Date2017-08-30
Registered Capital15000K CNY

Henan Yimeijia Environmental Protection Technology Co., Ltd., with its registered address in Yungou Village, Jiajinkou Town, Gongyi City, registered with the Gongyi Market Supervision and Administration Bureau, and represented by Xu Jing as its legal representative. Its business scope includes water treatment technology and environmental protection technology services; Construction of municipal public works; Environmental engineering construction; Landscaping; Production: Fiber filter media, fillers; Distribution: filter media and fillers, aeration devices and accessories, pipes and fittings, chemical products (excluding hazardous chemicals), mineral products, pumps, valves, environmental protection equipment, automation control equipment; Engaged in the import and export of goods and technology (excluding goods and technology that require approval or are prohibited from import and export by national laws and regulations).. Core products: Drainage Cap, , Filter Series

TOP7
Qingzhou New Dashui Treatment Technology Co., Ltd
Overall Score4.5 / 5
Est. Date2014-11-17
Registered Capital6000K CNY

Qingzhou New Dashui Treatment Technology Co., Ltd., with its registered address in Qiansi Village, Dongxia Town, Qingzhou City, Weifang, Shandong Province, is registered with the Qingzhou Market Supervision Administration Bureau and represented by Hao Aiyun. Its business scope includes general projects such as gas and liquid separation and purification equipment manufacturing; Sales of gas and liquid separation and purification equipment; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Manufacturing of specialized machinery and equipment for water resources; Sales of mechanical equipment; Manufacturing of specialized packaging equipment; Sales of specialized packaging equipment; Mechanical parts and component processing; Sales of mechanical parts and components; Sales of specialized chemical products (excluding hazardous chemicals); Mechanical equipment research and development; Mechanical equipment leasing; Installation services for ordinary mechanical equipment; Maintenance of electronic and mechanical equipment (excluding special equipment); Installation and maintenance of specialized machinery for agriculture, forestry, animal husbandry, and fisheries; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; 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 project: production of disinfection equipment; Sales of disinfection equipment. (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: Drainage Cap, Reverse Osmosis Water Production Equipment, Reverse Osmosis Equipment

TOP8
Yixing Sumeng Environmental Protection Packing Co., Ltd
Overall Score4.5 / 5
Est. Date2016-04-22
Registered Capital2000K CNY

Yixing Sumeng Environmental Protection Filling Co., Ltd., with its registered address at No. 20 Nanxin East Road, Xiyuzhong Village, Heqiao Town, Yixing City, is registered with the Yixing Administrative Approval Bureau and represented by Tang Junhong. Its business scope includes the sales of environmental protection filling materials, environmental protection accessories, and fiberglass products; Processing and sales of plastic products. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Drainage Cap, Ball Ring Packing, Filler

TOP9
Yixing Shengquan Water Treatment Equipment Co., Ltd
Overall Score4.4 / 5
Est. Date2010-09-16
Registered Capital5800K CNY

Yixing Shengquan Water Treatment Equipment Co., Ltd., with its registered address located on the south side of Gaocheng Road, Yongxing Village, Heqiao Town, Yixing City, is registered with the Yixing Administrative Approval Bureau and represented by Shen Linyan. Its business scope includes licensed projects such as power generation, transmission, and power supply (distribution); Construction projects (projects that require approval by law and can only be operated after approval by relevant departments, with specific business projects subject to approval results) General projects: Manufacturing of specialized environmental protection equipment; Sales of specialized equipment for environmental protection; Manufacturing of specialized machinery and equipment for water resources; Sales of mechanical equipment; Manufacturing of plastic products; Sales of plastic products; Sales of rubber products; General equipment manufacturing (excluding special equipment manufacturing); Specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); Mechanical parts and component processing; Sales of mechanical parts and components; Installation services for ordinary mechanical equipment; Environmental consulting services; Engineering management services; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Rental services (excluding licensed rental services); Non residential real estate leasing (except for projects that require approval according to law, operating activities can be carried out independently based on the business license in accordance with the law). Core products: Drainage Cap, Filler, Filter Head And Cap

TOP10
Yixing Qingxi Environmental Protection Packing Co., Ltd
Overall Score4.4 / 5
Est. Date1998-07-03
Registered Capital12000K CNY

Yixing Qingxi Environmental Protection Filling Co., Ltd., registered in Gaocheng Town Industrial Concentration Zone, Yixing City, with the registration authority of Yixing Data Bureau and the legal representative of Zhang Chuanliang, operates licensed projects including power generation, transmission, and power supply (distribution) (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 sealing filling materials; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Manufacturing of plastic products; Sales of plastic products; Sales of specialized chemical products (excluding hazardous chemicals); Sales of non-metallic minerals and 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: Drainage Cap, Dynamic Aerator, Elastic Filler

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Yixing Weiya Environmental Protection Packing Factory2010-03-30Drainage Cap, Elastic Filler, Short Stem Filter Head5000K CNYNot Supported
Jiangsu Nantai Environmental Protection Packing Co., Ltd2010-05-25Drainage Cap, Biochemical Treatment Of Industrial Wastewater, Single Pore Membrane Aeration Head10600K CNYSupported
Hebei Xiangqing Plastic Products Co., Ltd2017-06-20Drainage Cap, Seedling Tray, Environment Protection10000K CNYNot Supported
Yixing Yilan Environmental Protection Equipment Co., Ltd2009-05-11Drainage Cap, Fine Bubble Diffuser , Mechanical Grating5800K CNYSupported
Henan Chengying Environmental Protection Technology Co., Ltd2021-06-03Drainage Cap6000K CNYSupported
Henan Yimeijia Environmental Protection Technology Co., Ltd2017-08-30Drainage Cap, , Filter Series15000K CNYSupported
Qingzhou New Dashui Treatment Technology Co., Ltd2014-11-17Drainage Cap, Reverse Osmosis Water Production Equipment, Reverse Osmosis Equipment6000K CNYNot Supported
Yixing Sumeng Environmental Protection Packing Co., Ltd2016-04-22Drainage Cap, Ball Ring Packing, Filler2000K CNYNot Supported
Yixing Shengquan Water Treatment Equipment Co., Ltd2010-09-16Drainage Cap, Filler, Filter Head And Cap5800K CNYSupported
Yixing Qingxi Environmental Protection Packing Co., Ltd1998-07-03Drainage Cap, Dynamic Aerator, Elastic Filler12000K CNYNot Supported

Purchasing Guide

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

  • For procurement requirements that require the use of drainage caps, it is recommended to prioritize confirming key technical parameters such as aperture size, material corrosion resistance, and pressure bearing capacity to ensure compatibility with the pipeline system.
  • In industrial wastewater treatment or building drainage systems, the filtration accuracy and anti clogging performance of drainage caps may require targeted screening due to differences in scenarios, such as the need to strengthen structural design in high suspended solids environments.
  • When selecting suppliers, reference can be made to product compatibility, business qualifications, enterprise activity, industry performance, and platform statistical information. These indicators can assist in evaluating supply stability and product reliability.
  • If the drainage cap is used in the chemical industry, additional attention should be paid to the adaptability of the material to acidic and alkaline media, and it is recommended to conduct a horizontal comparison with the industry data support of the supplier.

Knowledge Base

Q

In water treatment, filtration, and drainage engineering, the stable operation of a filter or bed system highly depends on the reliability of the bottom water distribution and filter material support structure. Traditional metal perforated pipes or ordinary plastic components are prone to rusting, aging, clogging, or loss of filter media in corrosive, high humidity, or impurity containing environments, leading to uneven water distribution, filter layer plate formation, and even system failure. To address these practical issues, P

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