Beijing Risun Science and Technologies Limited (hereinafter referred to as“BRiST”), located in Fengtai district, Beijing, is a subsidiary of Risun Group, which is one of Top 500 Chinese Enterprises. Risun Group has four chemical industrial bases in Xingtai, Dingzhou, Tangshan and Cangzhou. BRiST possesses four pilot plants in those four industrial bases respectively, as well as two provincial Engineering and Technology Centers, a state-level Testing Center, a Postdoctoral Workstation and tw...