R&D, processing and manufacturing of motorcycles, auto parts, accessories, and mechanical products and related technical services; design, manufacturing and related technical services of tooling molds (except for special regulations by the state); R&D, production, and sales of motorcycle engines; research, development, and processing of mechanical and electrical products, home appliances, bicycles, and environmentally friendly products; import, wholesale, retail, and commission agency (except auctions) of similar products (except special commodities) for the above products.