Model type cold (hot) water chillling unit consists of single model or multi modles.It has compact structure,compactness and light.It is easy for installation of the ship.Coastguard vessel Etc. Single model includes totally enclosed compressor.plate type evaporator.extension type condenser.four-way change valve.both-way expanding valve,stainless steel water trip.control box etc.The pressure test.vacuum test and running test had been done before the equipment delivery.The shiyard only needs to connect water pipe and wire.