In April of 1928, Tokujiro YAMAZAKI of the company called Sankyo (the distribution company of Makino Productions which conducted its business in the Shikoku region), gathered the owners of 150 independent theaters around Japan with Ryosuke Tachibana (the owner of Bando Tsumasaburo Productions), Kikumatsu OSHIMA (Kikusui Kinema Firm in Kobe City) and others.
1928年（昭和3年）4月、マキノ・プロダクションの四国ブロック配給会社・三共社の山崎徳次郎は、阪東妻三郎プロダクションの経営者・立花良介、神戸市の菊水キネマの大島菊松らとともに、全国150館の独立系映画館主を集めた。