... -making, quick in ice-removing. 3.The ice is uniform, constant Description of ZB-20 Model: ZB- ... in ice-removing. 2.The size of ice is uniform and constant. 3.The integer of product adapts ... the ammonia to protect, the cleanliness of inner cavity is very high. 4.Structure stability, easy to install. ... the evaporating pipe and ice-making column to capillary where is cut off and makes ice, when the time ...