... >880 Kg/m3. Durable Degree:AC4 Matt SurfaceMatt Surface Product Description Laminate Flooring (Matt Surface) 1 Structure: Top layer: Anti-ware paper ... grade: AC3, AC4. 4 Surface Type: Crystal surface, little embossed surface, medium embossed surface, real texture surface, mirror surface, high glossy surface 5 Jiont type: Flat joint ...