General Projects: Research and development of machinery and equipment; Sales of machinery and equipment; Sales of mechanical and electrical equipment; Sales of machine tool functional components and accessories; Sales of forgings and powder metallurgy products; Sales of mechanical parts and components; Sales of electronic equipment; Sales of pneumatic power machinery and components; Sales of hydraulic power machinery and components; Sales of fasteners; Sales of gas and liquid separation and purification equipment; Sales of metal products; Sales of instruments and meters; Sales of lubricating oils; Sales of plastic products (except for businesses requiring licenses, the company may independently operate in accordance with laws and regulations, except for those prohibited or restricted by laws and regulations)