Kojima Ajino, Japan
NAIKAI KOUN K.K. is a Japanese company focused on salt production and related businesses, with operations in the Seto Inland Sea region. The company's history dates back to the Edo period, where it has been involved in salt-making. NAIKAI KOUN K.K. contributes to local communities through its salt production activities and the development of former salt field sites into real estate projects. Its products include not only salt but also chemical products derived from seawater. The company aims to explore the potential of seawater to contribute to a more prosperous future. Founded in 1603, NAIKAI KOUN K.K. has been operating for over 400 years and continues to play an important role in the region's economy and culture. In 2026, the company participated in the Seto Inland Sea Industrial Art Festival.
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