Ibiti-bya plastiki (WPC) ni ubwoko bushya bwibintu byavumbuwe byagaragaye kwisi yose mumyaka yashize. Bikorerwa no kuvanga thermoplastique (urugero, polyethylene, polypropilene, polyvinyl chloride) hamwe na fibre zirenga 50% (urugero, ifu yinkwi, ibiceri byumuceri, ibyatsi by ibihingwa) kugirango bisimbuze imiti gakondo.