1. insect-resistant , waterproof, UV resistance 2.no cracking ,warping and splitting 3.long use life ,low maintance . ... common wood, such as small water absorption, no crack, no warp, UV resistance & long life, no worm-eaten, color stability, easy to maintain ... is friendly to the environment, because it has no formaldehyde release, recycling 100%, no pollution to soil and ground water.3. It can ...