Rio Glass Pvt Ltd | Toughened Glass Manufacturer Rajkot, Gujarat, … · 2014-06-04 · 600 to 650,...
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Rio Glass Pvt Ltd | Toughened Glass Manufacturer Rajkot, Gujarat, … · 2014-06-04 · 600 to 650, for a specified time & then sudden air-cooled, gives strength to the glass. The