The Types classification within the market taxonomy delineates product architectures that shape cost structures and functional capabilities. Single‑layer ETFE sheets, comprising the bulk of the portfolio, dominate due to their low material cost and ease of handling, supporting most roofing and facade projects. Multi‑layer configurations, often sealed with air gaps, capture a growing share by offering superior insulation and acoustic damping, essential for high‑performance building envelopes. Insulated ETFE systems, integrating foam cores, target energy‑intensive sectors and command premium pricing. Coated variants—UV‑resistant or anti‑soiling treatments—address longevity concerns, expanding applicability in harsh climates. Printed or patterned ETFE adds aesthetic value, increasingly adopted in flagship developments where visual identity is paramount. Each type contributes uniquely to the market’s revenue composition, with single‑layer and multi‑layer together representing the majority, while specialized coatings and printed options generate niche but high‑margin growth.