Manufacture of road motor vehicles; manufacture of special equipment; design of special equipment; installation, modification, and repair of special equipment. General items: sales of automobiles; sales of special equipment; manufacture of auto parts and accessories; wholesale of auto parts; retail of auto parts; solar power generation technical services; leasing of land use rights; leasing of non-residential real estate; leasing of residential real estate; leasing of machinery equipment; leasing services (excluding licensed leasing services); property management; manufacture of high-performance fibers and composite materials; sales of high-performance fibers and composite materials; manufacture of concrete structural components; sales of concrete structural components; manufacture of cement products; sales of cement products; import and export of goods; import and export of technologies.