We can import cemenCement Co. Cement Testing ReportNO. 400903021 Name Common Portland Cement Strength Grade42.5D3-22009-3-92009-4-9 Admixture12% Gypsum5% (Testing Result) (Item) (Unit) (National Standard) (Testing Result) (Cl)%0.060.016 (Burning Loss)%5.03.22 (Magnesia)%5.01.55 (SO3)%3.52.10 (Specific Surface Area)m2/300350 (First Curdling Time)h:min0:452:15 (Final Curdling Time)h:min10:003:10 (Stability) Must be accorded Accorded Strength(3 Days) Folding StrengthMPa3.55.55.605.555.50 CompressiveStrengthMPa17.025.025.225.024.824.625.225.0 Strength(28 Days) Folding StrengthMPa6.58.78.758.608.70 CompressiveStrengthMPa42.550.150.150.350.249.850.149.9 GB175-2007 XK23-201-07191 t from china