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The industrial value of fluorite is quite high, fluorite is common processing material. Fluorite powder processed by fluorite grinding mill is used in the chemical industry, rubber, ceramics, construc...
What is a non-woven mask?There are two kinds of non-woven masks. One is made of pure cotton absorbent gauze or knitted fabric with various non-woven fabrics sandwiched between.The other is sewn directly from nonwoven fab...
What's the difference between KN95 masksand N95 masks?KN95 masks:KN95 masks are actually masks that meet the requirements of China's GB2626 standard, GB stands for national standard.Standard non-oily particulate ...
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