Mold manufacturing; mold sales; mechanical parts and components processing; mechanical parts and components sales; metal structure manufacturing; metal structure sales; general mechanical equipment installation services; metallurgical specialized equipment manufacturing; metallurgical specialized equipment sales; mechanical equipment research and development; mechanical equipment sales; general equipment manufacturing (excluding special equipment manufacturing); electronic and mechanical equipment maintenance (excluding special equipment); general equipment repair; specialized equipment repair; packaging materials and product sales; metal material sales; photovoltaic power generation equipment leasing; solar power generation technology services; technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion; information technology consulting services; metal product repair; specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); building material sales; concrete structural component sales; cement product sales; wooden container sales; environmental protection specialized equipment sales; environmental protection specialized equipment manufacturing; packaging specialized equipment manufacturing; hydraulic power machinery and component manufacturing; hydraulic power machinery and component sales; electrical equipment repair; packaging specialized equipment sales; metal forming machine tool manufacturing; metal forming machine tool sales; hydraulic, pneumatic and sealing components and system manufacturing; hydraulic, pneumatic and sealing components and system sales; renewable resource recovery (excluding production scrap metal); production scrap metal recovery; renewable resource sales; renewable resource processing; metal waste and scrap processing; non-ferrous metal alloy sales; non-ferrous metal alloy sales; non-metal waste and scrap processing; metal product sales; wire and cable business; non-ferrous metal rolling processing; metal cutting processing services; packaging services; common non-ferrous metal smelting; environmental protection monitoring; goods import and export; road freight transport of general cargo vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods). Permitted items: power generation business, power transmission business, power supply (distribution) business; electrical installation services.