We sell Cement Portland. Our company works only with very realible suppliers. We can supply large amounts.Specification: Specifications for Ordinary Portland Cement 42.5 RSilicon dioxide 21.00Aluminium oxide 5.50Ferric oxide 3.30Calcium oxide 65.60Magnesium oxide 1.40Sulphur trioxide 2.70Loss of ignition 1.40Tricalcium silicate 60.00Dicalcium silicate 15.00Tricalcium aluminate 8.50Tricalcium aluminoferrice 9.76Physucal and Mechanical PropertiesAutoclave expention 0.02Initial setting time (VICAT) 105 minutesFinal setting time (VICAT) 133 minutesCompressive strength@03 days 230 KG/cm2 @07 days 305 KG/cm2 @28 days 420 KG/cm2 MINIMUM ORDER 100.000mt CIF