Changzhou light steel structures ltd., with its registered address at road no. 12, at lake tong town, wuhuang district, changzhou city, with the registration authority being the city's administrative approval authority, with legal representation from wuhuang district, covers licensed projects: construction works (subject to legal authorization for projects to be carried out with the approval of the relevant department, with specific permission of the relevant department) general projects: construction of metal structures; manufacture of light construction materials; manufacture of hardware products; manufacture of insulation and soundproofing materials; construction of metal accessories; contracting of external works; construction of greening works in the park; steel-stamp processing; metal structure sales; sale of building materials; sale of building decoration materials; cleaning services for buildings; sale of temperature-conservation materials; sale of plastics; sale of insulation and soundproof materials; sale of rain sheds; sale of metal accessories in construction; handling and handling; engineering management services; industrial engineering services (in addition to legally approved projects, autonomous operations with a business licence)