
Wholesale Thermal Insulation Wall Boards Commercial Lightweight Metal Carved Exterior Sandwich Panel. Long-lasting Durability: Outer metal layer resists rust for 45 years; paint color remains fade-free for 15 years. Extended Storage Life: Can be stored for at least 50 years in flat, dry, and ventilated conditions. Comprehensive Warranty: Covers mechanical defects with a 10-year warranty period. Superior Sound Insulation: High-density polyurethane foam core with independent closed cell structure. Waterproof Design: Compact plug-in and buckle-groove installation prevents water seepage and mold. Fire Safety Certified: Flame-retardant with Fire Rating 1 and certifications including CCC and ROHS. Free Sample Availability: Free samples provided for inspection before order confirmation. Flexible Customization: Customizable color, surface finish, and certificate options to meet requirements.