composite decking: thematerial is Best new"GREEN" material that helps to save the trees and protects the environment and is recognized. 1. Size: 21 x 145 MM 2. Color: Brown, Dark Brown, Grey, Bamboo 3. Material: 35% Recycled PE; 55% Wood/Bamboo; 10% other additive for stablizing color and physical properties. 4. Certificate: 2010 REACH COMPLIANT; Test report by Shanghai Building Material Test Insitute. 5. Design: Many kinds of Design by our designers or yourself. 6. R&D department:Professional R&D department servise for you