Machinery parts and components processing; construction engineering machinery manufacturing; general parts manufacturing; automotive parts and accessories manufacturing; rubber product manufacturing; metal processing machinery manufacturing; material handling equipment manufacturing; agricultural machinery manufacturing; general equipment manufacturing (excluding special equipment manufacturing); special equipment manufacturing (excluding licensed professional equipment manufacturing); mechanical and electrical equipment manufacturing; environmental protection special equipment manufacturing; power facility accessory manufacturing; industrial automatic control system device manufacturing; marine supporting equipment manufacturing; general equipment repair; metal material sales; metal structure sales; building materials sales; chemical product sales (excluding licensed chemical products); wire and cable operation; fire equipment sales; electronic special equipment sales; refrigeration and air conditioning equipment sales; mechanical and electrical equipment sales; non-ferrous metal alloy sales; machinery parts and components sales; non-residential real estate leasing; real estate brokerage; property management; import and export of goods; technology import and export. Permitted items: Special equipment manufacturing; road motor vehicle production; real estate development and operation.