The registration authority is the grand municipal municipal market supervisory authority, represented by a legal person, and includes the manufacture and sale of eco-environmental materials (without hazardous chemicals), the sale of chemical products (without licensed chemical products), the sale of paints (without hazardous chemicals), the sale of waterproofing materials, the sale of building materials, the sale of heating materials and the sale of sealed articles. (projects subject to legal approval may not operate without the approval of the relevant department)