Manufacturing of electrical signaling equipment and devices; sales of electrical signaling equipment and devices; research and development of auto parts; manufacturing of auto parts and accessories; wholesale of auto parts; retail of auto parts; wholesale of electronic components; retail of electronic components; research and development of motorcycles and parts; manufacturing of motorcycle parts; wholesale of motorcycles and parts; retail of motorcycles and parts; manufacturing of mopeds; manufacturing of lighting fixtures; sales of lighting fixtures; sales of lighting fixtures sales; Internet of Things technology research and development; household appliance manufacturing; household appliance sales; hardware product manufacturing; hardware product wholesale; hardware product retail; bicycle manufacturing; electric bicycle sales; bicycle and spare parts wholesale; bicycle and spare parts retail; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; mold manufacturing; mold sales; import and export of goods; technology import and export; certification consulting.