The Aerospace and Defense Prepreg ecosystem comprises a tightly coupled set of upstream, midstream, and downstream actors. Upstream, raw‑material and component suppliers provide high‑performance fibers, resins, and chemistries that meet aerospace‑grade specifications. Midstream participants—technology providers, system integrators, and original equipment manufacturers (OEMs)—convert these inputs into prepreg tapes, laminates, and finished structures using proprietary processes and certification expertise. Downstream, distributors and channel partners deliver qualified products to end users such as aircraft manufacturers, defense platform integrators, and maintenance organizations. Value is generated through material performance, compliance with regulatory standards, and the ability to integrate prepreg into complex airframe and weapons systems, while capture occurs via licensing, volume contracts, and after‑sales services.