... . low cost. Water-proof, fire-proof, anti-crack, anti-earthquake, anti-agingLight weight: 33kgs/sqmEasy for installation Water-proof, fire-proof, anti-crack, anti- ... 2 Good fireproofing characteristic,nonflammable material A grade, its fire-resistantlimit has reached more than 3 hours. 3 Good waterproofing ... use this kind of building materials, whithout cement, without steel, without brick.