... , 4 S, 6 S series of the air-filled type compression condensing units, as all kinds of refrigeration, main component, applied ... , 4 S, 6 S series of the air-filled type compression condensing units, is by the semi-closed compressor, water cooling ... control etcClose partly refrigeration compressor is by the sino-us joint venture-shenyang valley wheel freezer Co., LTD adopts advanced technology ...