Solid Garden Composite Decking--COOWIN WPC 1.ISO 9001: 2000, CE 2. ... HDPE, 10%~15% additivesSurface treating methodBrushing, sanding, groove, wood grainApplicationsOutdoor, garden, summer house, villa, and pool surrounds, exterior floor, seaside walk ... , Fade resistant Durable12. Dimension stability against moisture and temperature Solid Garden Composite Decking