... : 500kg/jumbo bag or as customer's request Micro silica in RefractoryThe microsilica is as a raw material, commonly ... life of refractory products. Micro-silica fume in the building materials industry and salesMicro-silica fume is at home and abroad ... high, strong, wear-resistant, resistant to erosion, corrosion-resistant, anti-penetration, antifreeze, the early strength of concrete or special cement ...