Yu Dan Jin

Beijing Topsec Network Security Technology Co. Ltd. provides network security products. The company was founded in 1995 and is headquartered in Beijing, China.

Pan Asian Microvent Tech (Jiangsu) Corp. engages in the manufacture, research and development, and sale of microporous materials. It offers expanded polytetrafluoroethylene membrane (ePTFE) and its modified derivatives. The company was founded by Wei Ping Yao, Yun Zhang, Ming Zhi Yang, and Dong Wei Zou on November 8, 1995 and is headquartered in Changzhou, China.

The Sixth Element (Changzhou) Materials Technology Co., Ltd. engages in the research, development, production, and sale of new carbon materials. Its products include graphene products such as electrical and thermal conduction type graphene, enhancement type graphene, and anti-corrosion type graphene, as well as electronic screens such as capacitive touch panels and capacitive touch screens. The company was founded by Yan Qu on November 14, 2011 and is headquartered in Changzhou, China.