Ceramic Microcrystalline abrasive, CMA, is a revolutionary generation of abrasives. The abrasive grains, composed of large number of sub-micron crystals, are designed to fracture conchoidally when stressed. Compared to common corundum abrasives, CMA is able to continuously expose new cutting surfaces and make the grinding wheel to maintain high stability and durability. It has better cutting ability, higher grinding efficiency and stronger toughness and can be used for deeply cutting and large feeding. During grinding process, CMA could be sharpened by itself, and less heat releases to avoid burning work pieces. Also compared to the super-hard abrasive, such as Synthetic Diamond and CBN, CMA is ready for dry or wet grinding with water or oil cooling. Not only black or non-ferrous metals, it also be applied sffectively to grind stainless steel, heat-resistant alloys and other special materials. At the same time, the price of CMA is much lower than CBN, Synthetic Diamond and other super-hard abrasive.