Development, production, and sales of automobiles and parts and other products; Design, production, and sales of bus chassis; Provision of related technical services and after-sales service; Modified automobile manufacturing; Automobile leasing services; Commercial vehicle delivery services; Electricity sales. Engaging in export business of self-produced products and technology; Engaging in import business of raw and auxiliary materials, instruments, meters, machinery and equipment, parts, and technology needed for production and scientific research (excluding those restricted or prohibited by the state); Engaging in processing with imported materials and three-plus-one trading-mix (processing with supplied materials, samples, or drawings, and compensation trade). Insurance agency business (accident insurance, motor vehicle insurance, home property insurance); Sales of medical devices, electromechanical products, hardware and electrical appliances, daily-use department stores, and non-hazardous chemical products; Used car trading (trading limited to used car trading markets); Self-owned property leasing; Operation and maintenance of charging pile and energy storage equipment.