... Fine Appearance and Long-term of service Polyurethane Sandwich Panel(PU Sandwich Panel) 1. Color Steel, Aluminum Steel and Stainless Steel cn all ... plate.2. Core Material: EPS, Rockwool, Glass Wool, PU, Paper Honeycomb, Aluminum Honeycomb, Plasterboard or others3. Core ... for This Item: Polyurethane(PU)4. Manufacture Technic: Manually Made Panel5. Structure: with ...