Specifications: 1)100% pure natural white, no obvious spot: a) Moisture: <6% b) Max. granule diameter: 0.154mm 2) 100% pure yellowish, no obvious spot: a) Moisture: <6% b) Max. granule diameter: 0.154mm 3) Yellow or brown a) Moisture: <6% b) Max. particle diameter: 0.154mmInner packing: 12.5kg/2 aluminum foil bagsOuter packing: 25kg/ctn, or packed as per buyers' requests