The business scope includes general projects: Metal structure manufacturing; Metal structure sales; Sales of metal products; Manufacturing of building decoration, plumbing parts, and other metal products used in construction; Manufacturing and processing of doors and windows; Sales of doors and windows; Metal material manufacturing; Sales of metal materials; Sales of building materials; Manufacturing of metal signs for transportation and public management; Sales of signs for transportation and public management; Wholesale of hardware products; Retail of hardware products; Construction of metal door and window engineering; Technical services, development, consultation, exchange, transfer, and promotion; Domestic trade agency; Import and export of goods; Technology import and export; Software development; Software sales; Software outsourcing services; Processing of mechanical parts and components; Sales of mechanical parts and components; Mold manufacturing; Mold sales; General equipment manufacturing (excluding special equipment manufacturing); Research and development of mechanical equipment; Communication equipment manufacturing; Intelligent basic manufacturing equipment manufacturing; Sales of intelligent basic manufacturing equipment; Labor services (excluding labor dispatch); Sales of rubber products; Sales of terminal testing equipment; Manufacturing of mechanical and electrical equipment; Sales of mechanical and electrical equipment; Integrated circuit sales; Sales of integrated circuit chips and products; Sales of synthetic materials; Sales of intelligent instruments and meters; Intelligent control system integration; Sales of mechanical equipment; Sales of plastic products (except for projects that require approval in accordance with the law, business activities can be carried out independently with the business license in accordance with the law) Licensed projects: Construction engineering construction; Residential interior decoration and renovation (projects that require approval according to law can only be carried out after being approved by relevant departments. The specific business projects shall be subject to the approval documents or permits issued by relevant departments)