Metal processing machinery manufacturing, auto parts and accessories manufacturing, motorcycle spare parts manufacturing, metal tool manufacturing, wholesale of metal materials, wholesale of building materials, retail of needle textiles, wholesale of needle textiles, wholesale of rubber products, wholesale of household appliances, sales of mechanical parts and components, retail of computer software, hardware and auxiliary equipment, retail of stationery supplies, wholesale of stationery supplies, retail of hardware products, wholesale of hardware products, wire and cable operations, business management, technical services, technology development, technical consultation, technical exchanges, technology transfer, technology promotion; food business.