Special equipment manufacturing; special equipment installation, modification and repair; road motor vehicle production; road freight transport (excluding dangerous goods). General items: special equipment sales; auto parts and accessories manufacturing; auto parts retail; auto parts research and development; metal packaging containers and materials sales; metal packaging containers and materials manufacturing; environmental protection special equipment manufacturing; environmental protection special equipment sales; special equipment repair; industrial robot manufacturing; general equipment manufacturing (excluding special equipment manufacturing); mechanical parts and components processing; mechanical parts and components sales; mechanical equipment leasing; mechanical equipment sales; mechanical equipment research and development; metal structure manufacturing; metal structure sales; metal material manufacturing; metal material sales; container manufacturing; container sales; container repair; container leasing services; spray coating processing; marine supporting equipment manufacturing; marine engineering equipment manufacturing; marine engineering equipment sales; domestic waste treatment equipment manufacturing; domestic waste treatment equipment sales; special equipment manufacturing (excluding licensed professional equipment manufacturing); generator and generator set manufacturing; generator and generator set sales; hydraulic power machinery and components manufacturing; hydraulic power machinery and components sales; pneumatic and electric tool manufacturing; pneumatic and electric tool sales; metallurgical special equipment manufacturing; metallurgical special equipment sales; coal-fired flue gas desulfurization and denitrification equipment manufacturing; coal-fired flue gas desulfurization and denitrification equipment sales; technical services, technology development, technical consulting, technology exchange, technology transfer, technology promotion; goods import and export; technology import and export.