Iridium-coated brown fused alumina was manufactured by processing quality corundum. The manufacturing proceed as follows: firstly, getting rid of the raw material through calcination at high temperature, then plating a layer of metal oxide on the abrasives' surface by certain technology, after so, it was finished. This product has these features which have uniform grain size, high purity, rough surface, strong toughness and hydrophilic, so it can be used for making high-grade abrasive belt, abrasive cloth, abrasive paper, resin grinding wheel, etc. Its quality has been verified in the markets of South Korea, Japan, Taiwan, India, Europe, etc and got high praise from customers. It combines traditional technology with information technology, new materials and technology to further enhance abrasives' quality.