The marine water chiller is the main unit for the cold source of a ship's central air conditioning system. Its compressor, refrigeration valves, and control components all adopt well-known domestic and international brands, featuring a novel design, easy operation, stable operation, and safety and reliability. Before leaving the factory, the equipment must undergo pressure testing, vacuum testing, and operation testing. After installation, the shipyard only needs to connect the cooling water pipes, refrigerant water pipes, and power supply to put it into operation. When combined with terminal air conditioning equipment such as indirect air handlers (or fan coil units), it can form a complete air conditioning system and realize a one-main-multiple-auxiliary air conditioning refrigeration system.