Rubber sheet, pipe, belt manufacturing; Rubber parts manufacturing; Other rubber products manufacturing; Plastic plate, pipe, profile manufacturing; Plastic silk, rope and woven goods manufacturing; Plastic parts manufacturing; Manufacturing of other plastic products; Graphite and carbon products manufacturing; Non-ferrous metal alloy manufacturing; Non-ferrous metal casting; Metal cutting machine tool manufacturing; Metal forming machine tool manufacturing; Casting machinery manufacturing; Metal cutting and welding equipment manufacturing; Other metal processing machinery manufacturing; Mining machinery manufacturing; Construction engineering machinery manufacturing; Rubber processing special equipment manufacturing; Plastic processing special equipment manufacturing; Mold manufacturing; Wholesale of non-metallic minerals and products (excluding hazardous chemicals and controlled chemicals); Other non-metallic processing special equipment manufacturing; Building materials wholesale; Wholesale of metals and metal minerals (excluding hazardous chemicals and controlled chemicals); Hardware products wholesale; Electrical equipment wholesale; Other mechanical equipment and electronic products wholesale; Other wholesale businesses not listed (excluding business items subject to approval); Trade agency; Other trade brokers and agents; Internet sales; Engaged in the import and export of all kinds of commodities and technologies (without the import and export commodity catalogue attached), except for the commodities and technologies that are restricted by the state or prohibited from import and export.