DISCO Corporation is a Japanese precision tools maker, especially for the semiconductor production industry. The company makes dicing saws and laser saws to cut semiconductor silicon wafers and other materials; grinders to process silicon and compound semiconductor wafers to ultra-thin levels; polishing machines to remove the grinding damage layer from the wafer back-side and to increase chip strength. The company is listed on the Tokyo Stock Exchange, where it is a component of the Nikkei 225 index. Wikipedia