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Manufacturer of Quartz Grit in India http://raypolytechminerals.com/#manufacturer-of-quartz-grit Quartz are generally used in tha petroleum industry,glass making and many other quartz sand uses. Ray Polytech Pvt.Ltd. always considers high purity traitsso that we can process Quartz Grit,Lumps and Powder of excellent quality.we have superior range of quartz and our ranges are very admired by our clients.hese lumps are available in different particle size depending upon the requirement of customers.