What is the difference between zinc chromate primers, wash primers

VHT SP306 Prime Coat Yellow Zinc Chromate Sandable Primer Filler Can - 11 oz. : Automotive

Metal-range : Sealer-primer-undercoat-others

Why Use Epoxy Primer? - Quora

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What is a primer and how do they work? - Quora

What are primer pockets and case trimming? - Quora

Zinc-Chromate Primer SM-1184 Zinc-Chromate Primer - Top Secret

Novel, Environmentally Friendly Corrosion Inhibitor for Self-Etching Wash Primers

Seymour 16-897 Primer, Yellow Zinc Phosphate 12 Ounce (Pack of 1) - Spray Paints

I didn't understand Primer. Did anyone? - Quora