Prepainted metal, often referred to as pre-coated metal or prefinished metal, is a type of metal substrate, usually steel or aluminum, that has been coated with a layer of paint or other protective finish before it is formed into final products. This process generally involves two main steps: 1. **Surface Preparation**: The metal is thoroughly cleaned and treated to ensure good adhesion and to prevent corrosion. This may include processes such as washing, phosphating, and applying a primer.
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