Quick answer: the top-ranked weatherproof sealant brands in China on this list are BAIYUN (Guangdong), Gui Bao (Sichuan) and Hui Tian (Hubei). 5 Chinese brands are ranked by registration, contact and product data; 10 companies are listed in total. Updated 21 Oct 2026.
Ranked weatherproof sealant brands
How this list is ranked- 01
BAIYUN
白云科技BAIYUN
- Weatherproof sealants
- Silicone sealants
- Construction adhesive without nails
Registered legal entity on file; email and phone published; operating since 1985.
View profile → - 02
Gui Bao
硅宝
- Weatherproof sealants
- Anti-mold sealants
- Silicone sealants
Registered legal entity on file; email and phone published; operating since 1998.
View profile → - 03
Hui Tian
回天
- Weatherproof sealants
- Conformal coatings
- Silicone sealants
Registered legal entity on file; email and phone published; operating since 1977.
View profile →
- 04
JINSHU 金鼠JINSHU
Registered as 杭州之江有机硅化工有限公司 in 1996.
- Weatherproof sealants
- Silicone sealants
- Construction adhesive without nails
- Damping sheets
- Potting compounds
- Silicone glass sealants
Why it ranks here: registered legal entity on file; email and phone published; operating since 1996.
- 05
antas 安泰antas
Registered as 广州集泰化工股份有限公司 in 2006.
- Weatherproof sealants
- Silicone sealants
- Construction adhesive without nails
- Sintered stone adhesives
- Silicone glass sealants
- Glue
Why it ranks here: registered legal entity on file; phone published; operating since 2006.
International weatherproof sealant brands in China
Foreign-owned groups with Chinese manufacturing or sales companies. Listed separately so the ranking above covers Chinese manufacturers only.
- INT
BOSTIK BOSTIK波士胶
Registered as 波士胶(上海)管理有限公司 in 2012.
- Weatherproof sealants
- Woodworking adhesives
- Pressure-sensitive adhesives
- Hot-melt adhesive
Why it ranks here: registered legal entity on file; email and phone published; operating since 1889.
- INT
DOWSIL DOWSIL陶熙
Registered as 陶氏化学(中国)投资有限公司 in 1997.
- Weatherproof sealants
- Anti-mold sealants
- Thermal Grease
- Conformal coatings
- Silane Coupling Agents
- Silicone sealants
Why it ranks here: registered legal entity on file; phone published; operating since 1897.
- INT
Sika Sika西卡
Registered as 西卡(中国)有限公司 in 2005.
- Weatherproof sealants
- Anti-mold sealants
- Concrete admixtures
- Waterproofing agents
- Waterproof coatings
- Fire-resistant coatings
Why it ranks here: registered legal entity on file; phone published; operating since 1910.
More Weatherproof sealants brands and companies
| Brand | Registered company | Website |
|---|---|---|
| YONGAN永安YONGAN | 山东永安胶业有限公司 | china-yongan.com.cn |
| Si Lan De思蓝德 | 郑州中原思蓝德高科股份有限公司 | — |
Comparison table
| # | Company | Province | Est. | Registered company |
|---|---|---|---|---|
| 01 | BAIYUN白云科技BAIYUN | Guangdong | 1985 | 广州白云科技股份有限公司 |
| 02 | Gui Bao硅宝 | Sichuan | 1998 | 成都硅宝科技股份有限公司 |
| 03 | Hui Tian回天 | Hubei | 1977 | 湖北回天新材料股份有限公司 |
| 04 | JINSHU金鼠JINSHU | Zhejiang | 1996 | 杭州之江有机硅化工有限公司 |
| 05 | antas安泰antas | Guangdong | 2006 | 广州集泰化工股份有限公司 |
Frequently asked questions
How many weatherproof sealants manufacturers and suppliers in China are listed here?
10 companies are listed for weatherproof sealants (耐候胶). 5 Chinese manufacturers have full profiles and are ranked; 3 international brands with China operations are listed separately.
Where are China's weatherproof sealants manufacturers located?
Among profiled companies: Guangdong (2), Shanghai (2), Sichuan (1), Hubei (1), Zhejiang (1).
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, 9 have an official website and 5 publish an email address.