... . four finishes:Glost,Patina ,Frost,Sandstone.Features:1. good transparency, high rigidity;2. environment-friendly, non-toxic, non-radiated, no harm ... to health3. Fire resistant:US ASTM E84 Class B.4. anti-invasion, anti-dirt, easy to clean and maintain5 ... have a new surface finishing now, which is scratch resistant. High quality ceiling tiles