The company's registered address is workshop no. 5 of the ishima economic technology development zone, ishisha zhengzhou, hebei province, with the registration authority being the market supervision authority of the zhuang zhuang zhuang district, and its legal representatives operate on general projects: engineering management services; engineering technical services (except planning management, surveying, design, supervision); plastics manufacture; general equipment manufacture (excluding special equipment manufacture); specialized equipment for environmental protection; environmental consultancy services; technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion; sales of plastics; specialized equipment for environmental protection; sale of electrical facilities; sale of instrumentation forms; sale of valves and rotor blades; sale of electronic products; sale of electronic devices and electrical components; sale of metal products; installation of general machinery. (a) licensing of projects (in addition to those subject to legal authorization, operating on an autonomous basis under an operating licence): construction work (except construction of nuclear power plants, construction of civilian airports). (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)