He established various related companies such as the Showa Worsted Spinning, the Kyoritsu Muslin, the Sanyo Leather, and the Kobe municipal Raw Silk which led to the formation of the Kawanishi combine.
昭和毛糸紡績、共立モスリン、山陽皮革、神戸生糸など多数の関連企業を設立し、川西財閥を形成する。