The registration authority is the administrative approval board of the wu gang district of suzhou, represented by legal persons, and includes licensed projects: construction works; design of construction works (subject to legal authorization for projects to be carried out with the approval of the relevant departments, and subject to approval of the approval of the approved projects); sale of metal structures; construction of metal accessories; manufacture of metal materials; container manufacturing; sale of metal structures; sale of metal spares for construction; manufacturing of doors and windows; painting of paints; sale of containers; sale of metal materials; sale of doors and windows; repair of containers; construction of metal windows and windows; rental of construction machinery and equipment; rental of containers; sale of electrical appliances; sale of electronic equipment; sale of office equipment; export and import and export of goods (in addition to the projects authorized by law, business licences)