Igi-Plastic Composites (WPC) jẹ iru tuntun ti ohun elo akojọpọ ti o farahan ni agbaye ni awọn ọdun aipẹ. Wọn ṣejade nipasẹ didapọ awọn thermoplastics (fun apẹẹrẹ, polyethylene, polypropylene, polyvinyl chloride) pẹlu diẹ ẹ sii ju 50% awọn okun ọgbin egbin (fun apẹẹrẹ, iyẹfun igi, iyẹfun iresi, koriko irugbin) lati rọpo awọn alemora resini ibile.