China's CAS Space targets $607 million IPO for reusable rocket R&D https://www.reuters.com/science/chinas-cas-space-targets-607-million-ipo-reusable-rocket-rd-2026-04-01/?taid=69ccf4db9654f600013042da https://www.reuters.com/science/chinas-cas-space-targets-607-million-ipo-reusable-rocket-rd-2026-04-01/?taid=69ccf4db9654f600013042da