The application segment of the Metal Surface PU Sandwich Panel market is the primary driver of demand, accounting for roughly 45 % of total revenue in the construction sector, 30 % in refrigeration, 15 % in transportation, and 10 % in industrial equipment. Construction panels are employed in roofing, cladding, and prefabricated building modules, where their lightweight, high‑strength, and thermal‑insulation properties reduce structural loads and energy consumption, directly expanding market volume. Refrigeration panels serve cold‑storage warehouses and walk‑in freezers, where the polyurethane core delivers superior temperature stability, thereby commanding premium pricing and contributing significantly to overall market size. Transportation applications include railway carriage bodies and truck trailers, where the panels’ corrosion resistance and reduced weight improve fuel efficiency, adding a niche but growing share. Finally, industrial equipment such as pressure vessels and chemical processing units rely on the panels’ chemical resistance, supporting a steady, specialized revenue stream. This application‑centric taxonomy underpins the Metal Surface PU Sandwich Panel segmentation and clarifies each sub‑segment’s quantitative impact on the market.