... The dense purification film is insoluble in water, and has high hardness, desirable adhesive force, and prominent rustproof performance. Product ... performance, and can be used to prepare different waterproof, acid-proof and rustproof paints, such as rustproof paints for ships ... and dry place.3. Guarantee period: twelve months Factory High Quality Anhydrous Zinc Phosphate Zn3(PO4 )2 Zn 50% Min