16mm 20mm 25mm PU Sandwich Wall Panel Waterand Fire Proof Wall Panels Exterior Metal Carved Board

16mm 20mm 25mm PU Sandwich Wall Panel Waterand Fire Proof Wall Panels Exterior Metal Carved Board. Long-lasting Durability: Metal layer resists rust for 45 years; paint color remains unchanged for 15 years. Superior Sound Insulation: High-density polyurethane foam core with independent closed cell structure. Waterproof & Fireproof: Concave-convex plug-in installation prevents water seepage; flame-retardant material. Flexible Customization: Customizable color, surface finish (smooth/frosted/embossed), and certificate requirements. Lightweight & Easy Install: Light weight reduces structural load; easy installation saves cost and time. Eco-Friendly Material: Made with high-quality aluminized zinc plate and polyurethane foam; green and durable. Free Sample Provision: Free samples provided for inspection before order confirmation. 10-Year Warranty: Comprehensive 10-year warranty with 24-hour after-sales service support.