Cabot microelectronics is a top polishing compound company in the microelectronics industry. We are looking for a reliable and long term manufacturers for one of our key raw materials - Colloidal Silica.Below is a brief specs:Density: 1.386 1.403.pH: 9.1 9.9.Viscosity (cP): max 15.Surface Area (m2 per g): 70-100.Size to be defined: (~32nm by S.A. measurement).Our requirement is in excess of 70MT per month .