... chemical additives. (Anti-UV agent, Anti-oxidation agent, stabilizers, colorants, anti fungus agent, coupling agent, reinforcing agent, lubricants.)Surface TreatmentWG(wood Grain ... 4. Easy to install and low labor cost5. Requires no painting, no glue, low maintenance6. 100% recycle, environmental ... .product flow TAIXU WOOD,EASY YOUR LIFE! Low maintenance and no painting WPC Composite Decking, Outside ...