Production and sales of engine bearings, camshaft bushings, bearing materials, mechanical bushings, and vehicle control solenoid valves, as well as research, development, production, and sales of other automotive parts; mold research, development, manufacturing, processing, and sales; sales of hardware and electromechanical products, chemical labor protection supplies, metal materials, and building materials; import and export of goods and technology (excluding goods and technology prohibited or subject to administrative approval by the state). (For licensed projects, operations are permitted only after obtaining relevant department approvals.)