The aluminum sheet surface is first degreased and chemically treated, then coated with roll paint and dried for curing. The flatness of the paint film on the roll-coated board is superior to that of the spray-coated board. In terms of color, there are options for glossy and matte finishes, with the latter being more common in the market. Roll-coated boards are generally more expensive than spray-coated ones. The distinctive feature of roll-coated boards is their high color realism. The quality and grade of the roll-coating process vary greatly, not only depending on the materials used but also on the number of color applications, such as a two-coat-two-roll process, which involves spraying, baking, spraying, and baking again for a more even and smooth finish. High-quality roll-coated boards are also expensive, with vivid colors and strong durability.

Imported fluorocarbon roll coating is a type of roll coating that enhances color adhesion by adding fluorocarbon to the pigment, resulting in a longer lifespan, acid and alkali resistance, and corrosion resistance. It is commonly used for the external decoration of buildings (not afraid of wind and rain), and it is one of the more expensive options among roll coating boards.

The surface treatment process for the roll-coated board is as follows:

Roll-coated boards feature surface paint, primer, and back coating. The back coating primarily serves as an antioxidant, extending the product's lifespan. The process includes semi-finished goods, machine processing, forming, piece inspection, and then packaging and storage.

The roll-coated board features a uniform, smooth surface with no visible defects such as leakage, shrinkage holes, scratches, or peeling. However, minor defects such as bubbles, dents, and impurities are normal occurrences.