The wood-plastic composite decking is made of wood powder, plastic foam, and hardener. There will not be any toxic gas or sewage in the production of plastic wood. The installation and removal of the wood-plastic composite decking boards is simple and convenient, and it will not produce any noise to disturb the neighbors. If people come to live in their new renovated house, there will not be any formaldehyde. The wood-plastic composite decking boards also have several advantages: fire and moisture resistance, anti-aging, flame retardant, anti-corrosion, and anti-moth, paint-free, acid and alkali resistance, high stability. If the plastic wood is used in outdoor, standing against the sun and rain for a long time, there will not be any crack, aging or deform. The plastic wood has three categories: PVC, PE and PP.