R4 is a joint-stock company (kabushiki gaisha) with its head office in Naka-ku, Okayama City, Okayama Prefecture, Japan.
- Source: National Tax Agency, Shokubarabo (Ministry of Health, Labor and Welfare), gBizINFO (Ministry of Economy, Trade and Industry),
etc.
- We are not responsible for the availability of third-party websites or their contents.
- Date of Designation of Corporate Number: September 3, 2024