Manufacturing of special equipment for environmental protection; sales of special equipment for environmental protection; manufacturing of special machinery and equipment for water resources; manufacturing of ecological environment materials; sales of ecological environment materials; sales of special chemical products (excluding hazardous chemicals); water environment pollution prevention and control services; manufacturing of instruments and meters; sales of instruments and meters; repair of instruments and meters; fastening Manufacturing of parts; sales of fasteners; manufacturing of plastic products; sales of plastic products; manufacturing of auto parts and accessories; retail of auto parts; wholesale of auto parts; manufacturing of motorcycle parts; retail of motorcycles and parts; wholesale of motorcycles and parts; manufacturing of rubber products; sales of rubber products; manufacturing of general valves and cocks. Licensed project: construction project construction.