Hangzhou Chengshi Chemical Co., Ltd

General items: sales of chemical products (excluding licensed chemical products); sales of graphene materials; sales of special chemical products (excluding hazardous chemicals); sales of high-performance fibers and composite materials; sales of metal matrix composite materials and ceramic matrix composite materials ; Sales of rubber products; sales of high-purity elements and compounds; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; sales of pigments; sales of dyes; sales of coatings (excluding hazardous chemicals); new material technology research and development ; Sales of sealing packing; Sales of synthetic materials (except for projects that require approval according to law, business activities can be carried out independently with a business license and in accordance with the law).