The coated steel sheet is a product made by applying a coating (roll coating) or composite organic film (such as PVC film) to cold-rolled steel sheet or galvanized steel sheet after surface chemical treatment and baking curing. Some people also refer to this product as "pre-roll coated steel sheet" or "plastic coated steel sheet." The colored steel sheet products are produced in rolls on continuous production lines by manufacturers, hence also known as colored coated steel sheet rolls. Colored steel sheets combine the high mechanical strength and easy formability of steel materials with the good decorative and corrosion-resistant properties of the coating material. Colored steel sheets are a newly emerging material highly regarded in today's world. With the advancement of technology, increased environmental awareness, and the improvement of people's living standards, colored steel sheet prefabricated buildings are increasingly demonstrating their strong vitality and broad market prospects, and are favored by the construction, household appliances, electromechanical, transportation, interior decoration, office supplies, and other industries.

Color-steel activity houses offer the advantages of lightweight, high strength, thermal insulation, and aesthetic durability, seamlessly integrating architecture and decoration for rapid installation. These structures are clean in construction and widely used in large-span factories, warehouses, office buildings, villas, roof extensions, clean air rooms, cold storage, shops, kiosks, and temporary housing. Lightweight color-steel sandwich panels with a weight per square meter under 14KG can significantly reduce structural load and lower the cost of activity house construction.