The registered address of the city of siam is located at the street industrial park of avon bridge in ixiang city, with the registration authority of the city of ixiang as the administrative approval authority, with representatives of legal persons, and includes general items: gas, liquid separation and pure equipment manufacture; sale of gas, liquid separation and pure equipment; manufacture of general equipment (other than special equipment manufacture); repair of general equipment; manufacture of specialized equipment (other than licensed professional equipment manufacture); repair of specialized equipment; manufacture of mechanical and electrical equipment; sale of mechanical equipment; processing of spare parts; sale of mechanical parts, parts and components; construction of metal structures; sale of metal materials; sale of metal products; sale of machinery equipment; research and development of machinery equipment; installation services for general machinery equipment; maintenance of electronics, mechanical equipment (other than special equipment); import and export of goods; import and export of technology; services (other than dispatch of services); industrial design services; technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion (in addition to projects duly authorized by law, operation licence)