General Projects: Technical services, technical development, technical consultation, technical exchange, technology transfer, technology promotion; Environmental protection equipment manufacturing; General equipment manufacturing (excluding special equipment manufacturing); Equipment manufacturing (excluding manufacturing of equipment requiring a license); Mechanical and electrical equipment manufacturing; General component manufacturing; Metal structure manufacturing; Metal chain and other metal products manufacturing; Forging and powder metallurgy products manufacturing; Metal signage manufacturing for traffic and public management; Hardware products manufacturing; Machinery and equipment sales; Hardware products wholesale; Electronic products sales; Metal signage sales for traffic and public management; Electrical machinery and equipment sales; Maintenance of electronics and mechanical equipment (excluding special equipment) (except as otherwise required by laws and regulations, independently operate and manage in accordance with the business license).