... Indoors and Outdoorsis an extruded twin wall fluted plastic corflute sheet consisting of two flat walls connected ... Coroplast, Cartonplast, Coreflute,flute sheet,flute board, fluted pp sheet board,twin-wall corrugated Sheet,extruded polypropylene board etc.We are ... GROUPS in 2-12mm Plastic Polypropylene PP Twin Wall Hollow Corrugated Fluted Corflute Sheet / Signs / Signage / Signboard / Yard Signs ...