1.鋁(Al2O3)含量37.95%,燒失量14.65%,鐵(Fe2O3)含量1.06%
2.鋁(Al2O3)含量29.95%,燒失量11.54%,鐵(Fe2O3)含量0.80%
3.鋁(Al2O3)含量34.44%,燒失量13.16%,鐵(Fe2O3)含量0.78%