Y.A.C. HOLDINGS CO., LTD. engages in the management of its group companies that are involved in the manufacture and sale of manufacturing equipment and systems for hard disks, liquid crystal displays and semiconductors. It operates through the following segments: Mechatronics-Related, Display-Related, Industrial Equipment-Related and Electronic Equipment-Related Business. The Mechatronics-Related Business segment handles the manufacture, sale and service of hard disk-related, semiconductor-related, solar cell-related, laser process and precision cutting products. The Display-Related Business segment handles the manufacture, sale and service of dry etching-related equipment for flat panel manufacturing and precision heat treatment-related products. The Industrial Equipment-Related Business segment handles the manufacture, sale and service of cleaning finishing equipment, automatic packaging machines, FPC and semiconductor-related inspection equipment, etc. The Electronic Equipment-Related Business segment handles the manufacture, sale and service of industrial instruments, control communications, medical equipment, etc. The company was founded on May 11, 1973 and is headquartered in Tokyo, Japan.