1. Kev rov qab siv cov khoom pov tseg thiab cov khoom tawg ntawm ntau yam phom yas zaj duab xis, hnab, hnab ntim khoom, ntawv ntim, kav dej thiab lwm cov yas xws li polyvinyl chloride, polypropylene, tsis tshua muaj ntom polyethylene, siab ntom polyethylene, kab qis qis polyethylene;
2. Kev rov qab siv dua thiab poob qis deg yas yeeb yaj kiab zaj duab xis thiab cov khoom khawb, nplua khov;
3. Khawb, pelletize tshuaj fiber ntau cov pov tseg (polyamide, acrylic, polypropylene log, thiab lwm yam), thiab kho cov khoom tsis zoo lo lo ntxhuav rau kev rov ua dua tshiab;
4. Lub hom phiaj ntau lub tshuab, tuaj yeem hloov cov khoom sib tov lossis tshuab ziab khaub ncaws.