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HCT - Prosoco

HCT Hydroxylating conversion treatment

HCT Hydroxylating conversion treatment for marbles & limestone PROSOCO Conservare® Hydroxylating Conversion Treatment (HCT) is a two-component, waterborne treatment which protects and strengthens deteriorating carbonate building stones such as marble, limestone, dolomite and travertine. HCT (patents pending) dramatically increases the resistance of marble and limestone surfaces to acid rain, air pollution, and normal weathering.