MIYOSHI Mfg. Co., Ltd. has been manufacturing plastic products since its establishment in Ota-ku, Tokyo in 1952.
In order to expand the factory, new factories were established in Izunokuni City, Shizuoka and Muroran City, Hokkaido, and the head office was moved to Muroran City, where the main factory is currently located.
While responding to the various requests of customers, we built a system of production management and a quality assurance, entered the commercial tableware business, and factory obtained certification to manufacture “JIS S2029 plastic tableware''.
We have become a member of the Actis Group, whose slogan is "Partner of Food," and it has now become a core pillar of our business.
While operating business, we keep striving to become a company that can contribute to society by developing human resources and passing on technology.

・Manufacture and sales of plastic lunch box with ice gel pack
・Manufacture and sales of plastic tableware
・Melamine resin molding
・Molding of plastic products for industrial use
・Designing of mold and production of plastic products
・Manufacturing of metal shaft and insert-parts such as rollers by using metal shaft
・Assembly of the plastic parts