2B: Skin-passed and pickled after cold rolling, with a uniform matte surface; the most general-purpose finish, suitable for deep processing and industrial applications.

BA: Bright annealed after cold rolling, with a bright surface; suitable for home appliances, kitchenware, and decoration.

No.4: Brushed finish with distinct straight-line texture; suitable for architectural decoration and elevator panels.

8K: Mirror finish with high reflectivity; suitable for decoration and display, but sensitive to scratches and requiring high cleaning standards.

Selection logic: First consider appearance requirements, then the processing sequence (bending after mirror finishing easily causes scratches), and finally consider maintenance costs.