pe: Lub ntsiab raw khoom rau kev tsim cov ntawv yas yog polyethylene (PE), hu ua PE. Nws yog cov siab ua molecular organic compound ua los ntawm kev sib ntxiv polymerization ntawm ethylene. Polyethylene tau lees paub tias yog cov khoom siv zoo tshaj plaws hauv kev sib cuag nrog cov zaub mov hauv ntiaj teb. Nws yog non-toxic, tsis muaj ntxhiab thiab tsw ntxhiab, thiab ua tau raws cov qauv kev ntim zaub mov tu cev. pp: Polypropylene (Polypropylene PP) yog cov polymer siab siab. Tus monomer yog propylene CH2=CH-CH3. Polypropylene tau los ntawm sib ntxiv ntxiv polymerization. Tus qauv tshuaj lom neeg tuaj yeem qhia tawm raws li (C3H6) n, thiab cov qauv mis yuav tau qhia raws li 〔- CH2 － CH (CH3) -] n. Lub npe lus Askiv tag nrho yog: Polypropylene PP muaj cov qauv ntawm cov txheej txheem lub cev uas ib txwm muaj thiab nws yog cov siv lead ua crystalline.
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