Manufacturing of pneumatic and electric tools; manufacturing of special equipment for packaging; manufacturing of general parts and components; processing of mechanical parts and parts; manufacturing of general equipment (excluding manufacturing of special equipment); manufacturing of dust removal technology and equipment; manufacturing of daily chemical products; manufacturing of daily sundries; sales of daily sundries; sales of daily chemical products; wholesale of auto parts and accessories; sales of new energy vehicles; tram sales; automobile sales; auto parts research and development; auto parts and accessories manufacturing ; Auto parts retail; Motorcycle parts manufacturing; Motorcycle and spare parts wholesale; Motorcycle and spare parts retail; Motorcycle and spare parts research and development; Environmental protection special equipment manufacturing; Environmental protection special equipment sales; Motor manufacturing; Battery sales; Mechanical and electrical equipment sales; New energy vehicle electrical accessories sales; Special equipment leasing; Special equipment sales license projects: special equipment manufacturing; special equipment installation, transformation and repair; special equipment design