Important lanmarks in the foundation and development of Koei Toda Industries Co., ltd
_08/1984: After leaving Pioneer, Oishi Yasuo established Koei Industrial. Company in Minato District, Tokyo, Japan.
_11/2008: Established Hitachi factory in 1529 Yokobori, Naka-shi, Ibaraki, Japan.
_07/2009: Received certificate ISO 9001.
_05/2012: Established Koei Toda Industries Co., ltd at My Phuoc 3, Ben Cat, Binh Duong