Lithium China Stone, Lithium porcelain stone SiO2: 64-70%, Al2O3:17-22% ,Li2O:1.4- ... .5%, P2O5:0.1-1.2 Lithium China Stone, Lithium porcelain stoneSiO2: 64-70% Al2O3:17-22% Li2O:1.4-2 ... absorption and improved the tile strength. Lithium China Stone, Lithium porcelain stone