... scale, rust, oil paint, and the organic impurity passivate parent metal Centre air condition system cleaner XYLP7000To remove scale, rust, oil ... scale, rust, oil paint, and organic impurity on the metal’s surface. In the air condition system, you can establish ... is specially designed to effectively dissolve rust sediments, and passivate parent metal.Pretreatment dose Dose 2% - 6% solution, keep 24 to ...