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1.选购原则(1)根据环境温度选择防冻液的冰点。防冻东液的冰点至少应比当地最低气温低10℃。如果是浓缩液,应按产品说明书规定的比例加水稀释。(2)首选多用途长效防冻液。这类产品往往是有机型的环保产品,具有冬天防冻,夏天防沸,长年防腐蚀、防水垢的功能。
1. Procurement principles (1) according to the choice of freezing point freezing temperature of the environment. Antifreeze Dong freezing point should be at least 10 ℃ lower than the local minimum temperature. If it is concentrated, should be diluted according to the ratio specified in the product manual. (2) Preferred long-term multi-purpose antifreeze. Such products are often organic type of environmentally friendly products, with winter frost, summer anti-boiling, anti-corrosion for many years, anti-scaling function.