... 1.Structure stability 2.easy to install 3.High efficiency in ice-making, quick in ice- ... agent distribute each inner cavity of ice-making column, high efficiency in ice-making, quick in ice-removing. ... ammonia to protect, the cleanliness of inner cavity is high. 4. Structure stability, easy to install. Working principle ... to be heated will fall off quickly High Efficient, Energy-saving Round Ice Mould