The registration address of the company is located in unit 201, building 11, south yang zheng park park, located in the town of chinin, shandong province. The registration authority is the market supervisory authority of the city of jinin, which operates on behalf of li binh, including maintenance and technical services for environmentally friendly equipment; construction of environmental works and construction of electrical and electrical installations; cleaning and maintenance of industrial equipment; cleaning of aids, chemical aids, chemical products (without dangerous chemicals), smart electrical equipment, water supply equipment, water treatment equipment and spare parts, and sale of high-voltage electrical equipment. (projects subject to legal approval may not operate without the approval of the relevant department)