Oil drilling special equipment manufacturing; deep-sea oil drilling equipment manufacturing; metallurgical special equipment manufacturing; general equipment manufacturing (excluding special equipment manufacturing); electronic components and electromechanical component equipment manufacturing; geological exploration special equipment manufacturing; mining machinery manufacturing; pump and vacuum equipment manufacturing; construction engineering machinery manufacturing; auto parts and accessories manufacturing; power electronic components manufacturing; marine engineering equipment manufacturing; environmental protection special equipment manufacturing; mechanical and electrical equipment manufacturing; oil drilling special equipment sales; deep-sea oil drilling equipment sales; metallurgical special equipment sales; electronic components and electromechanical component equipment sales; geological exploration special equipment sales; mining machinery sales; power electronic components sales; marine engineering equipment sales; environmental protection special equipment sales; pump and vacuum equipment sales; special equipment sales; mechanical and electrical equipment sales; tram sales; automobile sales; intelligent vehicle equipment sales; auto parts retail; mechanical equipment sales; construction engineering machinery sales; mechanical parts and components processing; metal cutting processing services; quenching processing; spray coating processing; non-ferrous metal rolling processing; metal surface treatment and heat treatment processing; electronic and mechanical equipment maintenance (excluding special equipment); artificial intelligence application software development; motor and its control system research and development; general equipment repair; special equipment repair; technical services, technology development, technology consulting, technology exchange, technology transfer, technology promotion; mechanical equipment leasing; construction engineering machinery and equipment leasing; import and export of goods; technology import and export; motor vehicle repair and maintenance. Licensed items: road motor vehicle production.