GRISH is the leading manufacturer of Polycrystalline Diamond Slurry and Silica Colloidal Slurry in China. We are the top manufacturer of PCD diamond powder in China. That is why we can provide the most cost-effective lapping and polishing slurry to sapphire wafer processing. And we can provide different material to the different steps in the sapphire polishing. If you have any requirement of sapphire polishing, please do not hesitate to contact our sales engineer.