1.Vietnam standard (TCVN) - Quality of Cement as per TCVN 6260 - 2009 2.European standard (EN) - Certificate I -EN 197-1.2000- CEM II 42,5 R - Certificate II - En 197-1.2000 CEM II 42,5N - Certificate III - EN 197-1.2000 CEM I 42,5R 3.American standard (ASTM) - ASTM C150 TYPE-1 - ASTM C1157 TYPE- GU - ASTM C1157 TYPE- HE