... . Easy for installation. low cost. Water-proof, fire-proof, anti-crack, anti-earthquake, anti-agingLight weight ... : 33kgs/sqmEasy for installation Water-proof, fire-proof, anti-crack, anti-earthquake, anti-agingLight weight ... fireproofing characteristic,nonflammable material A grade, its fire-resistantlimit has reached more than 3 hours. ... whithout cement, without steel, without brick.