ISO9001 Quality System Certificated approved, best quality with good price, kindly contract me in time. Sodium Silicate SolidSpec.: Ratio: 1.9-2.1,3.0-3.2, 3.2-3.4 Density(g/cm3): 0.6-0.7Pack.: In 25kgs/wpp bagKindly contract me in time and let me know your ratio so that we can make the right offer for you. Crystal Chen Sodium Silicate Powder