The registration address of the new materials of tin is located in the cocoa and honey park in the town of an, nishi city, nishi city, with the registration authority being the administrative approval authority of sishan city, represented by the legal person guo chun-heng, and covers general items: new materials promotion services; sale of packaging materials and products; environmental consultancy services; development of new materials and technologies; engineering management services; sale of chemical products (other than licensed chemical products); sale of mechanical equipment; sale of lubricants; retail sale of hardware products; sale of metal materials; sale of construction materials (in addition to legally authorized projects, operating autonomously on the basis of a licence)