Thinner-Type Structural Fire Retardant Coating (Expanding Type) - The thinner-type structural fire retardant coating refers to coatings with a thickness of 3 mm or less, offering good decorative effects. At high temperatures, they can expand and foam, with a fire resistance limit generally less than 2 hours. This type of coating is typically solvent-based, featuring excellent adhesion strength, good weather and water resistance, good leveling, and good decorative properties. When exposed to fire, it slowly expands and foams to form a dense, hard fire insulation layer. This fire-resistant layer possesses strong impact resistance, delays the temperature rise of the steel, and effectively protects the steel components.