... HDPE, 10%~15% additivesSurface treating methodBrushing, grooved, sanding, embossing etcApplications Garden, park, landscape, villa, summer house, decoration, seaside railing etc ... and splitting5. Anti-water and moisture, acid, alkali and pest resistance6. Environmental friendly and no other hazard chemical7. Safe to ... authentication CE Certificate ISO 9001:2000 WPC Material Garden Railing