BCA is the ceramic alumina abrasive developed and produced by our company. It's a composition of sub—micron aluminum oxide and IameIIar grain containing rare earth materials. The grain combines unique self—sharpening prop— erties with a high hardness and toughness. BCA is applied to kinds of bonded abrasive tools with moderate bulk den— sity and nice particle shape. BCA can be used in a wide range of applications and provides highest performance and a long tool life.