The registration address of zhengzhou tin-asystal, limited, is located at no. 58 of the zheng zheng zheng zheng zheng zhuang community, with the registration authority being the market supervision authority of zheng zheng zheng zhuang, with the legal personality representing han zhong zianyan, and covers general items: sale of food additives; manufacture of specialized chemical products (without dangerous chemicals); production of chemical products (without licensed chemical products); sale of biological base materials; sale of specialized chemical products (without dangerous chemicals); sale of chemical products (without licensed chemical products); testing of lasers; initial processing of non-food agricultural products; sale of fire-resistant materials; and production of fire-resistant materials (which operate autonomously under a legal licence, except for projects subject to legal authorization)