Operate valves, fire equipment manufacturing (limited to branches), wholesale and retail, mechanical and electrical equipment, hardware and electricity, pipeline accessories, crafts, building materials, fire equipment, wires and cables, steel, plastic products, instruments and meters, electronic products, stationery supplies, office supplies, daily necessities, wholesale and retail; Engaged in the import of goods; Maintenance of fire-fighting equipment. [ For projects subject to approval according to law, business activities can only be carried out after approval by relevant departments]