Then, after the wartime contribution of a military factory for Nakajima airplane, they once expanded their business by constructing Hakodate factory and Fukushima factory, but they discontinued their manufacturing business of nets and spinning in 1985.
その後、戦時中の中島飛行機の軍事工場供出をへて、函館工場・福島工場を建設して拡大したが、昭和６０年に製網・紡績の製造事業を中止した。