Somes extinguishers may be used for several types of fires, which mean it will have several different letters in its classification.
有些灭火器可以用于多个类型的火源，因此上面标识的分类含有多个不同的字母。
Somes extinguishers may be used for several types of fires, which mean it will have several different letters in its classification.
有些灭火器可以用于多个类型的火源，因此上面标识的分类含有多个不同的字母。
应用推荐