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use of chemicals the use of natural materials the use of piezoelectric materials use of reinforcement materials use of bleaching materials use of strong smelling materials the use of natural materials in the peeling process use as an explosive and as a fuel use different materials use of organic materials the use of metamaterials use of interactive learning materials uses of pharmaceutical materials and damaged eggshells uses of superconducting materials use household items to remove nail polish use of shock chemicals use of different educational materials medicinal uses of glutathione collagen uses the use of acetone