Tadayuki Koizumi

Tokyu Department Store Co. Ltd. owns and operates departmental stores. Its products include clothing, accessories, personal goods, household and sundry goods and food products. The company was founded in 1948 and is headquartered in Tokyo, Japan.

Systex Co., Ltd. is a holding company that designs, develops, manages and sells web, office, and general purpose computer systems. It also sells computer network related equipment. It offers the following system packages: Medical and Surgical Management System, Medical and Health Examination System, Fingerprint Time Recorder or Attendance Management System, Medical and Dialysis Management System, and Health Insurance Union System KENPOS. The company was founded on September 1, 1970 and is headquartered Nagano, Japan.

SUMIHEI Corp. is a charcoal corporation that offers over 10,000 products, including housing-related materials such as cement, raw concrete, construction materials, plastering materials, system kitchens, and unit baths. The private company is based in Nagano, Japan. The Japanese company also offers new building materials and wood sashes. and has subsidiaries in Japan.