brown fused alumina powder,polishing alumina powder: 1High-hardness 2high-toughness 3sharp, good grinding brown fused alumina powder,polishing alumina powder brown fused alumina powder An annual production capacity of 30000MT ,More than 20 years of export experience ,High quality, best price and fastest delivery. brown fused alumina powder is fused with first-class raw materials in 3500KVA arc ...