5574363628 [email protected] Mon – Fri: 9:00 – 18:00 | Sat: 9:00 – 13:00 Phone-alt Whatsapp Facebook-f Instagram What is silica gel Silica gel was patented in 1919 by Walter A. Patrick, a professor of chemistry at Johns Hopkins University in Baltimore, Maryland. It had previously been used in gas masks during World War I for… Continue reading What is silica gel?
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