ANRITSU CORPORATION mainly manufactures and sells measurement equipment. It has three business segments. The Measurement Equipment segment manufactures and sells measurement equipment for digital communications and Internet protocol (IP) networks, optical communications and mobile communications, general-purpose measurement equipment for radio frequency (RF), microwave bands and millimeter wavebands, and offers service assurance. The Products, Quality and Assurance (PQA) segment provides automated weight sorters, automated electronic measurement equipment, foreign substance detectors and integrated quality management and control systems. The Others segment is engaged in the provision of information communication, related devices, logistics and welfare services, the leasing of real estate, the manufacture of components, as well as the human resources (HR) and accounting related clerical business.