Kohsai Co.Ltd.

Kohsai Co., Ltd. operates in Japan's jewelry business, offering jewelry accessories such as rings and pendants, as well as jewelry parts including earring parts and clasps under the MILLENNIUM TANZO and etna brands. The company was formerly known as Kosaikogei Co., Ltd. and changed its name to Kohsai Co., Ltd. in August 2017. Founded in 1955, it is headquartered in Kai, Japan, and operates as a subsidiary of Estio Co., Ltd.