Nanjing Hanrui Cobalt Co., Ltd. was established in 1997, and it is a comprehensive enterprise that specializes in exploitation and refining of cobalt ore, as well as R & D,production and sales of cobalt powder, cobalt tetroxide and other cobalt salts with capability of producing approximately 2500MT of pure cobalt metal content in 2011, it is a well recognized world player in Co Powder and Co Chemicals business. The Headquarter is located Jiangning Development Zone in Nanjing, Jiangsu Province,...