Co-extrusion board yog ib lub tshuab tshiab.Sib txawv ntawm lwm lub rooj tsavxwm ua npuas ncauj, muaj ob txheej txheej ntawm lub pob zeb ntawm ob sab ntawm co-extruded npuas board.
Nws yog tus cwj pwm los ntawm qhov chaw du heev thiab belongs rau cov khoom zoo PVC ua npuas ncauj.Tus nqi kuj yog 5% kim dua li lwm yam PVC ua npuas ncauj npua