Quick answer: the top-ranked optical attenuator manufacturers in China on this list are Ceyear (Shandong), Grandway (Shanghai) and ShinewayTech (Beijing). 5 Chinese manufacturers are ranked by registration, contact and product data; 10 companies are listed in total. Updated 21 Oct 2026.
Ranked optical attenuator manufacturers
How this list is ranked- 01
Ceyear
思仪Ceyear
- Optical attenuators
- Spectrum analyzers
- Network analyzers
Registered legal entity on file; email and phone published; operating since 2015.
View profile → - 02
Grandway
光维通信Grandway
- Optical attenuators
- Optical fiber testers
- Optical time-domain reflectometers
Registered legal entity on file; email and phone published; operating since 1994.
View profile → - 03
ShinewayTech
信维科技ShinewayTech
- Optical attenuators
- Optical fiber testers
- Optical time-domain reflectometers
Registered legal entity on file; email and phone published; operating since 2002.
View profile →
- 04
DEVISER 德力仪器DEVISER
Registered as 天津德力仪器设备有限公司 in 1999.
- Optical attenuators
Why it ranks here: registered legal entity on file; email and phone published; operating since 1989.
- 05
DIMENSION 维度科技DIMENSION
Registered as 深圳市维度科技股份有限公司 in 2007.
- Optical attenuators
Why it ranks here: registered legal entity on file; email and phone published; operating since 2007.
International optical attenuator brands in China
Foreign-owned groups with Chinese manufacturing or sales companies. Listed separately so the ranking above covers Chinese manufacturers only.
- INT
Keysight Keysight是德科技
Registered as 是德科技(中国)有限公司 in 1999.
- Optical attenuators
- Digital oscilloscopes
- Spectrum analyzers
- Network analyzers
- Signal generators
- Logic analyzers
Why it ranks here: registered legal entity on file; email and phone published; operating since 1939.
- INT
EXFO EXFO
Registered as 爱科斯福通信技术(北京)有限公司 in 2015.
- Optical attenuators
- Optical fiber testers
- Optical time-domain reflectometers
- Network cable testers
Why it ranks here: registered legal entity on file; phone published.
- INT
VIAVI VIAVI
Registered as 唯亚威通讯技术(北京)有限公司 in 2009.
- Optical attenuators
- Optical fiber testers
- Optical time-domain reflectometers
Why it ranks here: registered legal entity on file; phone published; operating since 1979.
- INT
YOKOGAWA YOKOGAWA
Registered as 横河电机(中国)有限公司 in 1985.
- Optical attenuators
- Digital oscilloscopes
- Differential pressure transmitters
- Optical fiber testers
- Optical time-domain reflectometers
- Pressure transmitters
Why it ranks here: registered legal entity on file; phone published; operating since 1915.
More Optical attenuators manufacturers and brands
| Brand | Registered company | Website |
|---|---|---|
| SantecSantec | 圣德科(上海)光通信有限公司 | santec.com.cn |
Comparison table
| # | Company | Province | Est. | Registered company |
|---|---|---|---|---|
| 01 | Ceyear思仪Ceyear | Shandong | 2015 | 中电科思仪科技股份有限公司 |
| 02 | Grandway光维通信Grandway | Shanghai | 1994 | 上海光维通信技术股份有限公司 |
| 03 | ShinewayTech信维科技ShinewayTech | Beijing | 2002 | 北京信维科技股份有限公司 |
| 04 | DEVISER德力仪器DEVISER | Tianjin | 1989 | 天津德力仪器设备有限公司 |
| 05 | DIMENSION维度科技DIMENSION | Guangdong | 2007 | 深圳市维度科技股份有限公司 |
Frequently asked questions
How many optical attenuators manufacturers and suppliers in China are listed here?
10 companies are listed for optical attenuators (光衰减器). 5 Chinese manufacturers have full profiles and are ranked; 4 international brands with China operations are listed separately.
Where are China's optical attenuators manufacturers located?
Among profiled companies: Beijing (4), Shanghai (2), Shandong (1), Tianjin (1), Guangdong (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 6 publish an email address.