Auto parts manufacturing and sales; vehicle research and development, design; vehicle sales; electronic products and electrical appliance design and development; operation of export business of self-produced products and technology, and import business of machinery, equipment, parts, raw materials, and technology required by the enterprise (excluding commodities and technologies restricted or prohibited by the state). Permitted items: road freight transport (excluding dangerous goods). General items: metal structure manufacturing; metal structure sales; communication equipment manufacturing; communication equipment sales; intelligent on-board equipment manufacturing; intelligent on-board equipment sales; software development; computer software and hardware and auxiliary equipment wholesale; information system integration services; information system operation and maintenance services; technical services, technology development, technology consulting, technology exchange, technology transfer, technology promotion; non-residential real estate leasing; leasing services (excluding licensed leasing services).