We were found in Kawasaki-City, Kanagawa-Prefecture in December 1966, as a CM by only 10 employees.
The very first customer who awarded business was located in Iriso-village in Saitama-Prefecture (present: Sayama-City, Saitama-Prefecture).
To commemorate and to appreciate of the first order forever,
we took the name of the location of the first customer “Iriso” as our company name.

April 1973, we developed a “wrapping pin” which are used on printed circuit board for TV and Audio.
It was our memorial first own developed product.
This fundamental technology lead us to be a general
connector manufacturer today.