... of polystyrene,without any wood,or wood powder. Our synthetic wood is made of polystyrene,without any wood,or wood powder. 1. With the realistic ... natural lumber,can be nailed, screwed and sawn like natural wood. 2. The profiles can be extruded to finished sizes, ... and indoor;outdoor series include furniture plank, spa skirting, etc.;indoor series include wall skirt, cornice, picture frame, etc. 4. ...