Changsha Santech Materials Co., Ltd. is a private enterprise that integrates scientific research, material processing, recycling and trade. Our company owns independent Import-Export right, and aims to be a leading premium supplier of rare metal, advanced materials and inorganic chemicals in the world. After years of efforts, Changsha Santech has developed reputable business relationships with customers from more than 20 countries and regions, and has exported tellurium, bismuth, gallium, ...