General business items: Development, sales, and technical consulting of computer software; import and export of goods and technologies; sales of domestic automobiles (excluding passenger vehicles with 9 seats or fewer); leasing of special-purpose vehicles; sales of plastic products; sales of rubber products; research and development of metal products; sales of metal products; sales of synthetic materials; sales of sponge products; research and development of resource recycling technologies; research and development of geotechnical technologies; geological disaster control services; ecological restoration and ecological protection services; engineering and technological research and experimental development; manufacturing of high-performance fibers and composite materials; sales of high-performance fibers and composite materials; research and development of new material technologies; sales of metal matrix composites and ceramic matrix composites; manufacturing of new membrane materials; sales of new membrane materials. Licensed business items: Research, development, production, and sales of energy absorbers, anti-climbers, obstacle deflectors, car stoppers, buffers, and passive safety protection devices in the rail transit field; research, development, production, and sales of honeycomb barriers and energy-absorbing boxes in the automotive field; research, development, production, and sales of high-strength microporous metal honeycombs, electromagnetic shielding materials, sound-absorbing and noise-reducing materials, metal honeycomb cores, metal honeycomb panels, and electromechanical equipment; research, development, production, and sales of safety monitoring systems and equipment, and precision instruments; repair of special-purpose vehicles and equipment, and repair of special equipment. Manufacturing of plastic products; manufacturing of rubber products; manufacturing of safety and fire-fighting metal products; manufacturing of metal structures.