... installation,low maintain 3.50-60% Wood,30-40% HDPE , 10-15% additives. WPC railing bar –Taixu1. Lifetime:30 years2. Resistant ... wood etc.Material50% wood fiber, 35%~40%Grade A HDPE, 10%~15% additivesSurface treating methodBrushing, grooved, sanding, embossing etcApplications Garden, park ... moisture and temperature Wood Plastic Composite WPC Handrails for Outdoor Steps