Tender For supply of white fused alumina powder f060 particle size minus 300 plus 212 micron , white fused alumina powder f080 particle size minus 212 plus 150 micron , white fused alumina powder f120 particle size minus 125 plus 90 micron , white fused alumina powder f150 particle size minus 106 plus 63 micron , white fused alumina powder f220 particle size minus 75 plus 45 micron