Shanghai Tianshen Copper Industry Group Co., Ltd. was founded in 1992, mainly engaged in the production and sales of non-ferrous metal materials. After thirty years of development, the groups annual sales revenue is currently 2.5 billion yuan (RMB). And it has passed IATF16949, ISO9001 quality system certification, and ISO14001 environmental management system certification. It now has more than 20 invention patents such as gravity casting and lead-free casting. The company adheres to the path of specialized copper product development, introduces high-tech production technology and material applications, and uses casting (recasting, sand casti ...