The registered address of ying jiayong industrial park, located in the streets of the city of yanjong, shandong province, is yang jiayong industrial park, with the registration authority being the municipal market supervisory authority, represented by legal persons and covering general projects: mechanical equipment development; sale of mechanical equipment; sale of specialized equipment for environmental protection; sale of mechanical and electrical equipment; technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion; sale of instrument instruments; sale of specialized chemical products (excluding dangerous chemicals); import and export of goods. (in addition to projects subject to legal authorization, projects are licensed to operate on an autonomous basis in accordance with the law and in accordance with the operating licence): construction design. (a project subject to legal approval may only be carried out with the approval of the relevant department, subject to the approval documents or licences of the relevant department)