Metal Pretreatment ChemicalsH-P Ratio in Zinc Phosphating admin2 months ago2 months ago05 mins You need to be logged in to view this content. Please Log In. Not a Member? Join UsLike this:Like Loading... Post navigation Previous: Surface Activation prior to PhosphatingNext: Alkaline Liquid Degreaser Formulation to result better shining and cleaning Please login to comment.