30%HDPE,60%wood fiber,10% chemical additives feels like natural wood,durable, color stability easy to install,100%recycle 1.Yongsheng WPC outdoor material components:(1) 30% HDPE (Grade A Recycled HDPE),(2) 60% bamboo/wood fiber (Professionally treated dry bamboo/wood fiber),(3) 10% chemical additives (Anti-UV agent, Anti-oxidation agent, stabilizer, colorants, anti fungus agent, coupling agent, ...