Quick answer: the top-ranked air tightness testing equipment brands in China on this list are WAYEAL (Anhui) and Bo Yi Qi Dong (Tianjin). 2 Chinese brands are ranked by registration, contact and product data; 10 companies are listed in total. Updated 21 Oct 2026.
Ranked air tightness testing equipment brands
How this list is ranked- 01
WAYEAL 皖仪WAYEAL
Registered as 安徽皖仪科技股份有限公司 in 2003.
- Air tightness testing equipment
- Ion chromatographs
- Environmental monitoring instruments
- Flue gas analyzers
Why it ranks here: registered legal entity on file; email and phone published; operating since 2003.
- 02
Bo Yi Qi Dong 博益气动
Registered as 天津博益气动股份有限公司 in 1997.
- Air tightness testing equipment
- Differential pressure gauges
Why it ranks here: registered legal entity on file; email and phone published; operating since 1997.
International air tightness testing equipment brands in China
Foreign-owned groups with Chinese manufacturing or sales companies. Listed separately so the ranking above covers Chinese manufacturers only.
- INT
COSMO COSMO科斯莫
Registered as 科斯莫计器(嘉兴)有限公司 in 2023.
- Air tightness testing equipment
Why it ranks here: registered legal entity on file; email and phone published; operating since 2023.
- INT
Innomatec Innomatec英诺太科
Registered as 英诺太科测试设备(太仓)有限公司 in 2011.
- Air tightness testing equipment
Why it ranks here: registered legal entity on file; email and phone published; operating since 2011.
- INT
Pfeiffer Pfeiffer
Registered as 普发真空技术(上海)有限公司 in 2007.
- Air tightness testing equipment
- Vacuum pump
Why it ranks here: registered legal entity on file; email and phone published; operating since 1890.
More Air tightness testing equipment brands and companies
| Brand | Registered company | Website | Email / phone |
|---|---|---|---|
| ATEQATEQ | 阿黛凯检测技术(上海)有限公司 | ateq.com.cn | 021-67639508 |
| CTSCTS | 美幸兴电子检测系统贸易(上海)有限公司 | cincinnati-test.com | 021-58366290 |
| FukudaFukuda福田 | 长野福田(天津)仪器仪表有限公司 | fukuda-tj.com.cn | 022-59810966 |
| INFICONINFICON英福康 | 英福康(上海)真空仪器有限公司 | inficon.com | — |
| UsonUson | 美国Uson公司 | — | — |
Frequently asked questions
How many air tightness testing equipment manufacturers and suppliers in China are listed here?
10 companies are listed for air tightness testing equipment (气密性检测设备). 2 Chinese manufacturers have full profiles and are ranked; 3 international brands with China operations are listed separately.
Where are China's air tightness testing equipment manufacturers located?
Among profiled companies: Anhui (1), Tianjin (1), Zhejiang (1), Jiangsu (1), Shanghai (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.