General project: Sales of metal products; Wholesale of hardware products; Retail of hardware products; Sales of electronic products; Sales of building materials; Sales of building decoration materials; Sales of lighting fixtures; Sales of audio equipment; Installation services for ordinary mechanical equipment; Mechanical equipment research and development; Professional design services; Wholesale of clothing and apparel; Retail of clothing and apparel; Information consulting services (excluding licensed information consulting services); Socio economic consulting services; Organize cultural and artistic exchange activities; Internet sales (except for the sale of goods that need to be licensed); Domestic trade agency; Import and export agency; Technology import and export; Import and export of goods