The registration address of the guangzhou van dah gas company ltd. Is located at room 2204, no. 76, north phoenix road, in guangzhou city. The registration authority is the guangzhou city garden market supervisory authority, with legal representatives and the scope of operation includes natural scientific research and experimental development; sale of gas compression machines; environmental consultancy services; sale of electronic specialized equipment; sale of semiconductor equipment; enterprise management consultancy; sale of internet equipment; sale of metal chains and other metal products; sale of electrical machinery equipment; technical research and development of biochemical products; technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion; internet sales (other than goods that require authorization for sale); sale of chemical products (other than licensed chemical products); sale of domestic trade agents; sale of metal cutting and welding equipment; sale of steel products for construction; sale of specialized equipment for refining, chemical production; sale of gas, liquid separation and pure equipment; sale of high-quality specialized steel materials; operation of hazardous chemicals;