General projects: Technical services, technical development, technical consultation, technical exchange, technology transfer, and technology promotion; Manufacturing of lighting fixtures; Manufacturing of photovoltaic equipment and components; Manufacturing of semiconductor lighting devices; Hardware product manufacturing; Manufacturing of electronic components; Manufacturing of other electronic devices; Sales of lighting fixtures; Sales of semiconductor lighting devices; Sales of photovoltaic equipment and components; Manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Manufacturing of household appliances;