... -2002 standard. SILICA FUME USED IN ROOF TILESUPER INSULATION,DURABLE,ACID AND ALKALI RESISTANT BUILDING MATERIALS OF NEW ... PRODUCTS Metal or magnesium super insulation roof tileHIGH PERFORMANCE1.High quality,elefant and uniform2. ... friendly,hygienic,non-radioactive4.Fireproof,non-combustible5.Better heat insulation than other tiles6.Insulating,non-conductive7.Acid-resistant, ...