Road freight transport (excluding dangerous goods). General items: manufacturing of auto parts and accessories; manufacturing of drawing, calculating, and measuring instruments; sales of drawing, calculating, and measuring instruments; installation services for general mechanical equipment; processing of mechanical parts and components; intelligent control system integration; installation and maintenance of industrial robots; professional design services; mold manufacturing; mold sales; sales of railway rolling stock parts; manufacturing of railway rolling stock parts; sales of metal materials; steel rolling and pressing; manufacturing of forgings and powder metallurgy products; sales of forgings and powder metallurgy products; technical services, technology development, technical consulting, technical exchange, technology transfer, and technology promotion.