Dear Mr. or Miss concernedGrain shape: semi round-angularBulk density: Specific gravity: Turbidity:< Hardness: Attraction loss: Acid solubility: Sio2:Fe2O3:Al2O3:Tio2:Cr2o3: Moisture:Our current supply is from Mainland China, and we want to diversify our source, if price and specs appropriate, replacement quantity is huge.And our basic requirements are :1. moisture< 5%2. mud volume (silt bearing) < 1%3. particle size: 550um-2360um4. Sio2 percentage> 99%And what is your whatsapp number?Contact me on whatsapp or email.BLUE BAY Inc.Angus Chen Show More