Special equipment manufacturing; special equipment design; special equipment installation, modification and repair; road motor vehicle production; production of dangerous chemical packaging and containers. General items: special equipment sales; valve and cock sales; import and export of goods; metal packaging containers and material sales; auto parts and accessories manufacturing; motor vehicle repair and maintenance; metal packaging containers and material manufacturing; automobile sales; general valve and cock manufacturing (excluding special equipment manufacturing); mechanical parts and components sales; mechanical and electrical equipment sales; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; ship modification; software development; gas, liquid separation and purification equipment sales; ship automation, inspection and monitoring system manufacturing; coal-fired flue gas desulfurization and denitrification equipment manufacturing.