... to cut and nail 5. no harmful gas waterproof and fireproof no harmful gas co-extrusion wpc concrete ... used in building construction and decoration 4.Features: fireproof, waterproof, heat/cold resistance, anti-ultraviolet, anticorrosive, electric insulation 5 ... landscape ,courtyard, floor of landscape , garden chairs, guard rails . waterproof and fireproof no harmful gas co-extrusion wpc concrete foam ...