Sales of instruments and meters; retail of hardware products; manufacturing of supply instruments and meters; manufacturing of photovoltaic equipment and components; manufacturing of smart vehicle-mounted equipment; sales of smart vehicle-mounted equipment; sales of wind and electric tools; sales of new energy prime mover equipment; sales of metal products; sales of mechanical parts and components; sales of Internet of Things equipment; sales of charging piles; bicycles And wholesale of spare parts; manufacturing of special instruments; sales of electrical equipment; sales of electrical equipment; sales of mechanical and electrical equipment; sales of distribution switch control equipment; sales of wearable smart devices; sales of smart instruments; sales of supply instruments; wholesale of hardware products; sales of intelligent power transmission and distribution and control equipment; sales of photovoltaic equipment and components; new Sales of energy vehicle electrical accessories; sales of electrical instruments and meters; manufacturing of smart instruments and meters; manufacturing of smart home gateways; manufacturing of wearable smart devices; manufacturing of distribution switch control equipment; manufacturing of smart home consumer equipment; manufacturing of hardware products; manufacturing of mobile terminal equipment; manufacturing of Internet of Things equipment; research and development of motors and their control systems; new energy prime movers Equipment manufacturing; network equipment manufacturing; computer software, hardware and peripheral equipment manufacturing; pneumatic and electric tool manufacturing; electrical instrument manufacturing; transformer, rectifier and inductor manufacturing; lighting equipment manufacturing; home textile manufacturing; special equipment manufacturing for lighting equipment production; power transmission, distribution and control equipment manufacturing; motorcycle spare parts manufacturing.