Energy-saving technology development and technology transfer; Wholesale and retail of household appliances, electrical equipment, hardware and electrical appliances, insulation materials, building materials, steel, decoration materials, water-based coatings, standard parts, rubber products, plastic products, daily necessities, chemical products (excluding hazardous chemicals and controlled drugs), wires and cables, mechanical equipment, valves, bearings, power tools, water pumps, clothing and shoes, lamps, pipe fittings, instruments and meters, electronic products, office supplies; Professional contracting for waterproofing, anti-corrosion and insulation projects (operating within the scope of the qualification certificate); And other projects not prohibited by laws, regulations, decisions of the State Council, and not requiring business licenses (unless otherwise stipulated by law). Energy-saving technology development and technology transfer; Wholesale and retail of household appliances, electrical equipment, hardware and electrical appliances, insulation materials, building materials, steel, decoration materials, water-based coatings, standard parts, rubber products, plastic products, daily necessities, chemical products (excluding hazardous chemicals and controlled drugs), wires and cables, mechanical equipment, valves, bearings, power tools, water pumps, clothing and shoes, lamps, pipe fittings, instruments and meters, electronic products, office supplies; Professional contracting for waterproofing, anti-corrosion and insulation projects (operating within the scope of the qualification certificate); And other projects not prohibited by laws, regulations, decisions of the State Council, and not requiring business licenses (unless otherwise stip (Projects that require approval shall be carried out after obtaining the approval of relevant departments. )