Manufacturing of lighting fixtures; sales of lighting fixtures; manufacturing of special equipment for the production of lighting fixtures; sales of metal products; research and development of metal products; sales of metal ores; sales of machinery and equipment; sales of electronic products; sales of smart home consumer equipment; manufacturing of smart home consumer equipment; sales of molds; Sales of building and decorative materials; retail of hardware products; manufacturing of hardware products; research and development of hardware products; retail of daily household appliances; sales of household appliances; research and development of household appliances; sales of household appliances spare parts; manufacturing of household appliances; engineering and technology research and experimental development; sales of daily necessities; sales of lamps; sales of automotive decorative supplies; sales of metal materials; sales of artificial intelligence hardware; sales of optical glass; sales of functional glass and new optical materials; import and export of goods.