Potassium alum is a natural anti-microbial that inhibits the growth of odor-causing bacteria.
钾明矾是天然的抗菌物质,可以抑制产生异味的细菌生长.
Aluminium borate melting block was prepared combination of boric acid, anhydrous alum and potassium sulfate.
采用硼酸和无水明矾及硫酸钾压块 、 焙烧、制备硼酸铝熔块.
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