Yuichi Takahashi

Part of Watahan & Co., Ltd., Watahan Trading Co., Ltd. is a Japanese company that wholesales drugs, clinical diagnosis reagent and chemical products. The company is based in Tokyo, Japan. The company was founded in 1965. Watahan Trading Co. was acquired by Watahan & Co., Ltd. on April 07, 2010.

Science Home KK provides franchise services for detached houses. It also sells promotional materials and offer technical support for member stores. The company was founded on May 2, 2011 and is headquartered in Hamamatsu, Japan.

Rigna Co. engages in the operation and original product development of furniture and interior miscellaneous goods for showrooms; and management of online shops. It also provides the designing direction for specialty stores and offices, interior designing, interior coordination for living spaces, operation of lifestyle proposal type accessory shops and others. The company was founded on May 8, 2003 and is headquartered, in Tokyo, Japan.