... can 1.water-proof,2.long life, 3.stronger than wood 4.wooden substitutes 5.against UV,ce,astm past ... (Grade A Recycled HDPE)60% bamboo/wood fiber (Professionally treated dry bamboo/wood fiber)10% chemical additives. (Wood texture strong, resistant to abrasion ... -friendly, saving forest resources2. with the look of the natural wood but less timber problems3. Moisture/Water resistant, less rotten, proven ...