ACC is one of the earliest suppliers of micro silica in China. We provide micro silica fume with different grades and densities that is used in many famous construction projects in the world, applying in concrete, mortar, oil field cement, refractory, chemical fertilizer and other fields. ACC micro silica complies with ASTM C 1240 and EN13263:2005 standards, and has been recognized by SGS, Exova and other famous test authorities and ENR enterprises.