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Silica sand for glass , ceramic, porellane, crystal, foundry .... Dear Sir Subject: Silica sand (SIO2). Attached Chemical & Physical Analysis Potential industries: 1) Silica Sand for Glass, 2) Silica Sand for Crystal, 3) Silica Sand for Foundry, 4) Silica Sand for Ceramic Industry 5) Silica Sand for other industries (please specify)