1997HG/T 2879.4-1997 Rubber Compounding ingredients-kaolin clay-Calculation of the SiO2/Al2O3 ratio
HG/T 2879.4-1997 Rubber Compounding ingredients-kaolin clay-Calculation of the SiO2/Al2O3 ratio was changed to HG/T 2879.3-2014 Rubber compounding ingredients.Kaolin clay.Part 3: Determination of silicon content.