According to the plastic substrate, WPC divides into PVC, PE, PP, PS, and ABS, and even products of PBT and PET are in development. Even though PVC is inflammable, it still has environmental protection issue. PE plastic wood has a large consumption; however, the oily wax texture of the material has low heat resistance, poor foaming, poor printing performance, and a product shrinkage; PP plastic wood has a wax texture and can withstand high temperature. Although the secondary processing has the risk of cracking, the appearance and texture are identical to a real wood, hence It can very well be done without post-production.