we offer portland cement 42.5,42.5R,52.5,52.5R.Competitive price, professional service, timely and constant cement supply. High Quality Portland Cement 42.5/42.5r/52.5/52.5rgrey ordinary portland cement 42.5/42.5r /52.5/52.5rStandard:Chinese GB175-2007/SGSClinker for cement Portland cement 42.5/42.5r/52.5/52.5r It is recommended for general architectural applications, such as precast concrete, ...