Manufacturing of special equipment (excluding manufacturing of licensed professional equipment); manufacturing of dust removal technology equipment; manufacturing of industrial automatic control system devices; sales of industrial automatic control system devices; manufacturing of special equipment for environmental protection; sales of special equipment for environmental protection; manufacturing of automobile parts and accessories; manufacturing of motorcycle parts and accessories; manufacturing of lighting fixtures; manufacturing of hardware products; manufacturing of architectural decoration, plumbing pipe parts and other metal products for construction; and mold manufacturing. Licensed items: import and export of goods; import and export of technology; production of electric heating food processing equipment; production of pressure cookers.