Research, development, production, and sales of automotive parts (prohibiting metal etching, passivation, painting, and electroplating processes; prohibiting discharge of phosphorus and nitrogen pollutants in production wastewater; prohibiting engagement in radioactive, highly toxic, and high-hazard dust); sales of interior decoration products; vehicle leasing; vehicle sales; Class II vehicle maintenance (small vehicles); used car trading; vehicle information consulting services; self-operated and agent import and export of various commodities and technologies (excluding commodities and technologies restricted or prohibited by the state). General items: spray coating processing.