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GMC is specialized to provide Chinese industrial minerals and ferroalloy to the Abrasive, Ceramic, Foundry, Metal, Refractory, Chemical and steel industries with top quality and competitive price, we have our own trading office and production facilities in China. Qualification of industrial minerals and ferroalloy, involving source evaluation ,quality control at the producing plant, and independent sampling & Testing before shipment, are all steps to assured that the quality ordered is the quality delivered.