Pump and vacuum equipment manufacturing; pump and vacuum equipment sales; car wash equipment manufacturing; car wash equipment sales; mechanical equipment sales; mechanical equipment research and development; mechanical equipment leasing; general equipment manufacturing (excluding special equipment manufacturing); special equipment manufacturing (excluding licensed special equipment manufacturing); general parts manufacturing; mechanical parts and components processing; mechanical parts and components sales; spray gun and similar apparatus manufacturing; spray gun and similar apparatus sales; hydraulic power machinery and components manufacturing; hydraulic power machinery and components sales; special ceramic products manufacturing; special ceramic products sales; plastic products manufacturing; plastic products sales; motor and its control system research and development; motor manufacturing; electric motor manufacturing; mechanical and electrical equipment manufacturing; mechanical and electrical equipment sales; water pollution control; goods import and export; technology import and export. Licensed items: Road motor vehicle manufacturing.