Factory Wholesale Light Weight Expanded Micro-Holes Aluminium Honeycomb Core. Aeronautic Grade Material: Made from AA3003/AA5052 aluminum alloy for high strength and corrosion resistance. High Strength-to-Weight Ratio: Offers excellent specific strength and rigidity with lightweight design. Fireproof Performance: Achieves A1 flammability classification for superior safety in building decoration. Customizable Dimensions: Accepts customized sizes for length, width, and height to meet specific project needs. Multiple Core Types: Available in expanded, unexpanded, perforated, or full block honeycomb cores. 10 Years Experience: Professional team providing design to finish product solutions for clients. Free Sample Offer: Free samples provided, though freight costs are covered by the buyer.