By this fact, one theory holds that craftsmen to make Suemura-type Sueki spread out to local areas, whereas the other theory holds that craftsmen in local areas learned how to make Suemura-type Sueki and produced them.
このことを陶邑工人の地方拡散とみる説、在地工人が陶邑様式を受容して生産したとみる説とがある。