Tus neeg sawv cev tso tawm yog ib qho khoom ua haujlwm uas ua tau zoo li cov pwm thiab muaj fiber ntau dua thiab muaj fiber ntau cov khoom siv hluav taws xob, cov khoom siv fiber ntau yam thiab ua tiav molding ua kom zoo nkauj, tshuab floughing thermoplastics, lub tshuab nqus tsev cov ntawv txheeb thiab cov khoom siv extruded. Cov neeg sawv cev pwm yog cov tshuaj siv tshuaj yeeb, cua sov thiab kev ntxhov siab, tsis txhob cuam tshuam nrog cov pwm kom tsis txhob sib cuam tshuam, thiab tsis cuam tshuam nrog kev pleev xim lossis lwm yam haujlwm ua haujlwm theem nrab.