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CORROSION INHIBITOR FOR ACID ETCHING BATHS IN PARTICULAR THOSE FOR REMOVING BOILER SCALE AND RUST FROM WATER PIPING AND OTHER INSTALLATIONS MADE OF GALVANIZED STEEL AND METHOD OF OBTAINING SUCH INHIBITOR
CORROSION INHIBITOR FOR ACID ETCHING BATHS IN PARTICULAR THOSE FOR REMOVING BOILER SCALE AND RUST FROM WATER PIPING AND OTHER INSTALLATIONS MADE OF GALVANIZED STEEL AND METHOD OF OBTAINING SUCH INHIBITOR