Jiangsu Changyou Environmental Protection Technology
301557
Hefei conver Holding
603409
LIERDA
832149
4
SHENGNAN TECHNOLOGY
837006
5
CHK
831167
The company was founded in 2000 and is one of the earliest third-party testing institutions engaged in testing services in China, and was listed on the GEM board of the Shenzhen Stock Exchange on January 27, 2021. The company is mainly engaged in third-party testing business. Main business: Automotive testing, consumer goods testing, electronic and electrical product testing, health and environmental testing, testing equipment, etc. Company honors: “National High-tech Enterprise”, “Guangdong Famous Brand Enterprise”, “Shenzhen High-tech Enterprise”, etc.