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High Quality for China Custom Rainbow Unicorn Enamel Lapel Pin for Sale
The rainbow effect is achieved by a process called anodizing. Metal badges are casted or stamped in a mold firstly, just like any other pins. Before any enamel is added, the metal pins are carefully cleaned and prepared for the anodizing process. A chemical solution is created, and the pins are submerged into it. A grounding wire is then attached to each pin, and an electrical charge is then passed through the metal with a wire. The chemical reaction with the electri...
