ʻO ka WPC (PE&PP) Papahele Lāʻau-Plastic ka mea i hoʻohuihui ʻia me nā mea lāʻau-plastic i hoʻopiha ʻia me nā lako hana like ʻole o ka hui ʻana, mai ka pāʻani, ka hoʻopuka ʻana i nā huahana, ke kāwili ʻana i ka mea maka i loko o kekahi ʻano hana, e hana ana i nā ʻāpana lāʻau-plastic ma waenakonu, a laila e ʻomi i nā huahana.
A i kēia mau lā, hoʻohana ʻia ke ala ʻelua-ʻanuʻu i kēia manawa, ka hoʻopili ʻana i kahi hoʻohana ākea ākea o ka dual-cone-a i ʻole ʻelua-extruder granulation extruder, a laila nā huahana extrusion extruder double-cone a i ʻole single screw, i hoʻohana nui ʻia i ka papahele i loko a i waho paha, nā parapets, ka pā, e like me nā huahana extrusion plastic WPC (PE&PP).