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2020-12-15Is there a difference between water purifier and filter?
一、看原理和材料 过滤器主要是通过活性炭的原理，将水中的大分子有害物质滤除，但是对于病毒细菌及重金属仍然不能去除，通常使用过滤器过滤后的水...
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2020-12-15What is the difference between butterfly valve and gate valve
在众多的阀门产品中，闸阀和蝶阀都是很是常用的阀门型号。然而，很多用户在选型时因不知道闸阀和蝶阀的区别是什么，而不知道如何选择这两种阀门。...
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2020-12-15Is angle seat valve sanitary?
Sanitary valves generally need to pass CCC certification, National Quality Supervision Bureau certification, national drinking water management committee certification. The angle seat valve can save sp...
