Permitted projects: General contracting of housing construction and municipal infrastructure projects; Various engineering construction activities; Residential interior decoration; Construction professional operation; Installation, repair and test of power facilities. (for projects that must be approved according to law, business activities can be carried out only after being approved by relevant departments. The specific business items shall be subject to the approval documents or licenses of relevant departments. ) general items: Wire and cable business; Wholesale of hardware products; Retail of hardware products; Sales of building decoration materials; Sales of building materials; Sales of light building materials; Floor sales; Sales of knitwear and textiles; Paint sales (excluding hazardous chemicals); Sales of thermal insulation materials; Sales of metal products; Sales of metal structures; Sales of high-quality special steel materials; Sales of metal materials; Sales of glass fiber reinforced plastic products. (except for the items subject to approval according to law, the company shall independently carry out business activities according to law with its business license)