●History of Oiharu casting works Oiharu casting works was established in 1952. The trade name is Nanbu Hoseido. The company is based in Mizusawa, Oshu City, Iwate Prefecture, known as the birthplace of Nambu ironware. With a history of over 70 years, Oiharu casting works is a workshop mainly engaged in the casting of iron kettles, teapots, and wind chimes. While inheriting the traditional techniques of Nambu ironware, the company injects new ideas into its products in line with the changing times. We have the largest production capacity in the industry for iron kettles, teapots, and wind chimes, and we export our products both domestically and to foreign countries.