Quick answer: the top-ranked rainwater drainage outlet brands in China on this list are JOABOA (Guangdong) and LESSO (Guangdong). 2 Chinese brands are ranked by registration, contact and product data; 10 companies are listed in total. Updated 21 Oct 2026.
Ranked rainwater drainage outlet brands
How this list is ranked- 01
JOABOA 卓宝JOABOA
Registered as 深圳市卓宝科技股份有限公司 in 2001.
- Rainwater drainage outlets
- Rapid-setting leak repair mortar
- Siphonic drainage systems
- Polymer waterproof mortar
- Waterproof coatings
- JS polymer cement waterproof coatings
Why it ranks here: registered legal entity on file; email and phone published; operating since 1999.
- 02
LESSO 联塑LESSO
Registered as 广东联塑科技实业有限公司 in 1999.
- Rainwater drainage outlets
- Aluminum plastic composite pipes
- Plastic pipes / water pipes
- Siphonic drainage systems
- HDPE drainage pipes
- T-joint
Why it ranks here: registered legal entity on file; email and phone published; operating since 1996.
More Rainwater drainage outlets brands and companies
| Brand | Registered company | Website |
|---|---|---|
| BLUCHERBLUCHER | 丹麦BLUCHER公司 | blucher.com |
| FastFlowFastFlow捷流 | 捷流技术工程(广州)有限公司 | fastflowgroup.com.cn |
| FullflowFullflow富勒威 | 富乐威(广东)投资有限公司 | fullflow.com.cn |
| GEBERITGEBERIT吉博力 | 吉博力(上海)贸易有限公司 | geberit.com.cn |
| Jin Chi劲驰 | 江苏劲驰环境工程有限公司 | sosoon.net |
| Sheng Teng Ke Ji圣腾科技 | 广东圣腾科技股份有限公司 | saintarco.com |
| SUNS泫氏SUNS | 高平市泫氏铸管有限公司 | suns-china.com |
| YestrutYestrut | 江苏宇顺新型建材有限公司 | yushunkz.com |
Frequently asked questions
How many rainwater drainage outlets manufacturers and suppliers in China are listed here?
10 companies are listed for rainwater drainage outlets (雨水斗). 2 Chinese manufacturers have full profiles and are ranked.
Where are China's rainwater drainage outlets manufacturers located?
Among profiled companies: Guangdong (2).
How is this list ranked?
By the completeness and verifiability of each company's data: a registered legal entity, an official website, published contact details, a product range and company history. The rank is not a quality rating, and no company pays for its position. See How we rank for the full method.
How do I contact these manufacturers?
Each listing shows the company's official website and, where published, its email and phone number. Of the 10 companies listed, 10 have an official website and 2 publish an email address.