Our main business: intelligent control system integration; Development of intelligent water affairs system; Manufacturing of industrial automatic control system devices; Sales of industrial automatic control system devices; Sales of intelligent warehousing equipment; Manufacturing of special equipment for environmental protection; Sales of special equipment for environmental protection; Manufacturing of mechanical and electrical equipment; Sales of mechanical and electrical equipment; Manufacturing of refrigeration and air conditioning equipment; Sales of refrigeration and air conditioning equipment; Machining of mechanical parts and components; Sales of mechanical parts and components; Container manufacturing; Container sales; Container maintenance; Metal structure manufacturing; Metal structure sales; Sales of gas and liquid separation and purification equipment; Manufacturing of gas and liquid separation and purification equipment; Sales of intelligent port handling equipment; Energy storage technology services; Marine energy system and equipment manufacturing; Manufacturing of electronic components and electromechanical components; Wholesale of computer software, hardware and auxiliary equipment; Information system integration service; Import and export of goods; Technology import and export; Import and export agent.