Surface treatment of iron tray: the surface is galvanized by spraying or zinc plating, usually worth electrogalvanizing or cold galvanizing.

The color is blue and white.

The thickness of the zinc layer is 6-8um. Compared with plastic spraying, the zinc coating will not fall off easily when it is hit.

Hot dip galvanizing, also known as hot dip galvanizing, is a method for steel components to obtain metal coating by immersed in molten zinc solution.

The thickness of zinc layer is 35-90um, with better adhesion.

Common problems with zinc plating: 1. Dark color, 2. Zinc coating peeling and rust, 3. Surface oil.