Jiangsu Changyou Environmental Protection Technology
301557
Hefei conver Holding
603409
LIERDA
832149
4
SHENGNAN TECHNOLOGY
837006
5
CHK
831167
The company was listed on the Shanghai Stock Exchange in 1998. The company has now developed into a national first-class enterprise integrating scientific research, production and trade. Its member companies are distributed in the four regions of Changge, Zhengzhou, Beijing and Shanghai. The company is a high-tech enterprise focusing on R&D, production and sales of synthetic diamond products. The main products include two major product systems: cultivating diamonds and industrial diamonds. Corporate honors: Enterprise postdoctoral research workstation, enterprise technology center, key laboratory brand, etc.