[東証]上場廃止等の決定:常磐開発(株) https://kabukore.jp/%e6%9d%b1%e8%a8%bc%e4%b8%8a%e5%a0%b4%e5%bb%83%e6%ad%a2%e7%ad%89%e3%81%ae%e6%b1%ba%e5%ae%9a%ef%bc%9a%e5%b8%b8%e7%a3%90%e9%96%8b%e7%99%ba%ef%bc%88%e6%a0%aa%ef%bc%89/