DURFERRIT

CHEMICAL PRODUCTS FOR INDUSTRIAL USE, NAMELY, CHEMICAL COMPOUNDS AND PRE AND POST TREATMENT CHEMICALS USED FOR HEAT TRANSFER, IN THE HEAT OR SURFACE TREATMENT, CLEANING AND DESCALING OF METALS SUCH AS IRON AND STEEL AND IN THE HEAT OR SURFACE TREATMENT OF LIGHTS METALS SUCH AS ALUMINUM, MAGNESIUM, AND THE ALLOYS, BRASS AND COPPER