High purity quartz sandIt is made from natural crystal rock of one to four grade or perfect natural quartz after procedure of election, calcination, breaking up, acid-deali
Refined Quartz Sand and PowderIt is made from quartz rock after the procedure of election, breaking up, removing iron by magnetism, washing by acid, drying and grinding and shapin
Melting Silicon PowderIt is made from good electric melting quartz sand, broken by airflow disintegrator or vibration machine and produced by high grade machine. Main comp
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