... 5-level1 from the degree of pollutionLevel55Radioactivity2A class decoration materials: Ira ≤1.0, Ir ≤1.3 ... .Large public construction projects such as office building,commercial podium,etc4.High environmental requirement places ... durability.The surface is made of Inorganic facing materials,processed by Mega's patented techniques, giving ... Item No. Project Case Packing building materials wall covering