R&D and sales of LED lamps, solar photovoltaic products, batteries, chargers, communication equipment, electronic products, instrumentation, office machinery, auto parts, motorcycle parts, Wujinjiaodian, hardware tools, lighting equipment, and household appliances; domestic trade; operating import and export business. Machinery and equipment rental. Production of LED lamps, solar photovoltaic products, batteries, chargers, communication equipment, electronic products, instrumentation, office machinery, auto parts, motorcycle parts, Wujinjiaodian, hardware tools, lighting equipment, and household appliances.