Quick answer: the top-ranked insulation resistance tester manufacturers in China on this list are CEM (Guangdong), VICTOR (Guangdong) and Sanwa. 5 Chinese manufacturers are ranked by registration, contact and product data; 10 companies are listed in total. Updated 21 Oct 2026.
Ranked insulation resistance tester manufacturers
How this list is ranked- 01
CEM
华盛昌CEM
- Insulation resistance testers
- Multimeters
- Ammeters
Registered legal entity on file; email and phone published; operating since 1991.
View profile → - 02
VICTOR
胜利仪器VICTOR
- Insulation resistance testers
- Resistance testers
- Analog multimeters
Registered legal entity on file; email and phone published; operating since 1982.
View profile → - 03
Sanwa
Sanwa三和
- Insulation resistance testers
- Analog multimeters
- Multimeters
Registered legal entity on file; email and phone published; operating since 1941.
View profile →
- 04
KDDQ 康达电气KDDQ
Registered as 武汉市康达电气有限公司 in 1992.
- Insulation resistance testers
- Power test instruments
Why it ranks here: registered legal entity on file; email and phone published.
- 05
Xi Ma Yi Biao 希玛仪表
Registered as 东莞万创电子制品有限公司 in 2006.
- Insulation resistance testers
Why it ranks here: registered legal entity on file; email and phone published.
International insulation resistance tester brands in China
Foreign-owned groups with Chinese manufacturing or sales companies. Listed separately so the ranking above covers Chinese manufacturers only.
- INT
FLIR FLIR菲力尔
Registered as 前视红外光电科技(上海)有限公司 in 2009.
- Insulation resistance testers
- Illuminance meters
- Thermal imaging cameras
Why it ranks here: registered legal entity on file; email and phone published.
- INT
Fluke Fluke福禄克
Registered as 福禄克测试仪器(上海)有限公司 in 2001.
- Insulation resistance testers
- Resistance testers
- Digital oscilloscopes
- Thermal imaging cameras
- Multimeters
- Clamp meters
Why it ranks here: registered legal entity on file; email and phone published; operating since 1948.
- INT
HIOKI HIOKI日置
Registered as 日置(上海)测量技术有限公司 in 2007.
- Insulation resistance testers
- Resistance testers
- Analog multimeters
- Network cable testers
- Multimeters
- Clamp meters
Why it ranks here: registered legal entity on file; email and phone published; operating since 1935.
- INT
KYORITSU KYORITSU克列茨
Registered as 克列茨国际贸易(上海)有限公司 in 2008.
- Insulation resistance testers
- Resistance testers
- Analog multimeters
- Clamp meters
Why it ranks here: registered legal entity on file; email and phone published; operating since 1940.
- INT
UNI-T 优利德UNI-T
Registered as 优利德科技(中国)股份有限公司 in 2003.
- Insulation resistance testers
- Resistance testers
- Digital oscilloscopes
- Cable tracers
- Gauss meters
- Network cable testers
Why it ranks here: registered legal entity on file; phone published; operating since 1988.
Comparison table
| # | Company | Province | Est. | Registered company |
|---|---|---|---|---|
| 01 | CEM华盛昌CEM | Guangdong | 1991 | 深圳市华盛昌科技实业股份有限公司 |
| 02 | VICTOR胜利仪器VICTOR | Guangdong | 1982 | 深圳市驿生胜利科技有限公司 |
| 03 | SanwaSanwa三和 | — | 1941 | 三和电气计器株式会社 |
| 04 | KDDQ康达电气KDDQ | Hubei | — | 武汉市康达电气有限公司 |
| 05 | Xi Ma Yi Biao希玛仪表 | Guangdong | — | 东莞万创电子制品有限公司 |
Frequently asked questions
How many insulation resistance testers manufacturers and suppliers in China are listed here?
10 companies are listed for insulation resistance testers (兆欧表). 5 Chinese manufacturers have full profiles and are ranked; 5 international brands with China operations are listed separately.
Where are China's insulation resistance testers manufacturers located?
Among profiled companies: Guangdong (4), Shanghai (4), Hubei (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, 10 have an official website and 9 publish an email address.