The SU-8 Photoresist ecosystem comprises upstream material suppliers, midstream formulation and equipment manufacturers, and downstream system integrators and end‑users. Upstream, specialty chemical producers deliver epoxy monomers, solvents, and photoinitiators that define resist performance. Midstream, photolithography equipment OEMs and resist formulators blend these inputs into SU‑8 formulations and provide exposure/development tools. Downstream, contract manufacturers, MEMS/micro‑fluidic device makers, and research institutions purchase the finished resist through distributors or direct channels, applying it in high‑aspect‑ratio patterning. Value is created through material differentiation, process integration, and application expertise, and captured by each tier via product margins, service contracts, and intellectual property licensing.