NOF Technology replaces the whole chemical pretreatment section present in conventional lines by an oxidation-reduction furnace. In conventional chemical cleaning lines there are many variables to control such as the strength of various solutions, the reaction rate of various chemicals and acids. Proper control of so many variables has been a challenge for the galvanizers and this led to the problem of unclean strip and unwanted residues. The advantage of this process over the conventional cleaning line is that there is only one parameter which is varied and that is temperature. This gives better control over the entire production process and a clean strip of steel is obtained which is necessary for proper zinc adhesion.