... good liquidity,granularity, stablequality 2,for ceramics, refractories Precision alumina powder 1ball grain,good liquidity,granularity, stablequality 2,for ceramics, ... refractories and surface treatmentwhite thin alumina powder for 99#ceramicsCalcined alumina for ceramics, refractories and surface treatment ... Gravityg/cm3≥99≥96.0≤0.06≤0.03≤0.30≤0.20≥3.94≥99≥95.0≤0.06≤ ...