Types segmentation classifies rigid polymer microfluidic chips by material composition and fabrication approach. The primary material categories are thermoplastic polymers (e.g., cyclic olefin copolymer, polymethyl methacrylate) and photo‑curable polymers (e.g., SU‑8, epoxy‑based resins). Within thermoplastics, subtypes include injection‑molded, hot‑embossed, and CNC‑machined chips, each offering distinct trade‑offs between dimensional tolerance, surface finish, and scalability. Photo‑curable polymers are further divided into lithographically patterned and 3D‑printed variants, where lithography provides sub‑micron feature resolution while additive manufacturing enables rapid design iteration. A secondary classification considers surface functionalization—hydrophilic, hydrophobic, and chemically modified—affecting fluidic performance and assay compatibility. The material‑type mix influences cost structure, time‑to‑market, and suitability for specific applications; for instance, injection‑molded thermoplastics dominate high‑volume diagnostic kits, whereas 3D‑printed photo‑curable chips are preferred for custom research prototypes. Understanding these sub‑type dynamics is essential for accurate market taxonomy and forecasting.