Co-extruded wood-plastic board has one more layer of protective layer thickness than ordinary wood-plastic board, which is more wear-resistant, scratch-resistant, dirt-resistant, crack-free, and mildew-free, so now co-extruded wood-plastic board has become the main outdoor flooring. Material. What is Co-Extruded Wood-Plastic Flooring? Co-extruded wood-plastic flooring is made of functional plastics (mainly