Manufacturing and sales: Fully electronic truck scale (operating according to the scope and period approved by the special license)*. General items: manufacturing of weighing instruments; sales of weighing instruments; electronic weighing services; sales of metal materials; processing, production, sales: mechanical transmission devices, metallurgical equipment, electrical equipment (except those subject to special provisions or licenses by the state), motorcycle accessories, auto parts; sales: building materials, decorative materials (all do not contain hazardous chemicals), motorcycles, computers and supporting equipment, instruments and meters, communication equipment (excluding ground receiving and transmitting devices), office supplies, Wujijiaodian, and department stores. .