WOOD PLASTIC COMPOSITE outdoor decking / flooring / tile we produced is made of 55% wood fiber (Professionally treated dry wood fiber) 35% HDPE (Grade A Recycled HDPE) 10% chemical additives like Anti-UV agent, Anti-oxidation agent, stabilizers, colorants, anti fungus agent, coupling agent, reinforcing agent, lubricants...etc.This material is extruded by professional Wood-Plastic extruding machine under high temperature and pressure, so it is a kind of insect proof, green environment responsible material based on a 15 years warranty.