单词backwater valve
un.: 回水逆止阀网络: 回水阀
回水逆止阀
Produced headstock automatic backwater valve in a variety of exhibitions, fair access to a number of Gold, Silver, Honor Award;
公司生产的回水自动启闭阀在各种展览会、博览会上获得多项金奖、银奖、荣誉奖;