liuruojing
Ultra quiet, high temperature, environmental protection, pump body after anti-corrosion treatment超静音，耐高温，环保型，泵体经过防腐处理
李小墨Lena
防腐剂 :1.preservative2.antiseptic3.asepticRelative explainations: Examples:1.石炭酸可用来做防腐剂.Carbolic acid can be used to make antiseptic.2.盐是一种常用的食物防腐剂.Salt is a common...
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