Hnab ntim khoom noj yog cov khoom ntawd lub ntsiab rau polyethylene PE, PP ntim cov khoom noj khoom haus polypropylene, ntim cov zaub mov nyob hauv cov zaub mov ntim zaub ntim cov manufacturers no yuavtsum tau muaj ntawv pov thawj los ntawm QS.
Nyob rau yuav luag txhua uas hluavtaws cob. Cob yog tus muaj lub ntsiab rau yas, lub luag hauj lwm ntawm nplaum plays nws, yuav lwm Cheebtsam yas cemented mus ua ib tug lej. Thaum pub ntxiv tshaj qhov ntau additives yuav hloov cov khoom ntawm tus yas, tiam sis tus cob no los txiav txim rau yam kho hom yas, kev kawm thiab siv.
Hom uas cov hniav cov ntaub ntawv siv los cob: polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), phenol (PF), urea-formaldehyde (UF), epoxy (EP), polyester (PR), polyurethane (PU), poly methyl methacrylate (PUMA), silicone (SI) thiab cov zoo li no.
Raws li nyias kev hloov uas tshwm sim thaum diav, cov hluavtaws cob tau raug muab faib ua ob yam thermoplastic resins thiab thermosetting resins.