Tam sim no, cov cuab yeej siv kho mob pov tseg hauv tsev thiab txawv teb chaws feem ntau siv PVC ua cov khoom siv raw, uas muaj qhov zoo ntawm cov khoom siv lub cev thiab lub cev zoo, tus nqi qis, thiab cov txheej txheem tsim khoom yooj yim. Txawm li cas los xij, kev siv PVC ua cov khoom siv kho mob pov tseg tau muaj cov kev tsis zoo hauv qab no: ib qho me me ntawm polyethylene monomer yuav nyob hauv PVC, uas tau muab pov thawj los ua tus mob carcinogen; lub hnab yas uas yuav tsum siv thaum lub sijhawm ua khoom tiav tuaj yeem maj mam Cov tsiv teb tsaws ntawm cov kua dej tsis huv; qhov sib ntxiv ntawm ntau cov hlau uas muaj cov tshuaj tiv thaiv raws li stabilizers yuav ua kev puas tsuaj rau tib neeg kev noj qab haus huv; txhawm rau txhim kho qhov kev ruaj ntseg ntawm cov hlau stabilizers, ntxiv cov phosphorus-uas muaj cov khoom txuas ntxiv ntxiv rau qhov khoom lom ntawm PVC cov ntaub ntawv; Kev kho tshuaj ethylene yog qhov nyuaj thiab tuaj yeem ua rau cov pa phem ib puag ncig.
Vim tias cov xwm txheej saum toj no hauv PVC cov ntaub ntawv, qee lub tebchaws tsim nyob hauv Asmeskas, Nyij Pooj thiab Europe tab tom tsim lwm cov ntaub ntawv rau PVC. Txog niaj hnub no, PVC tau tswj hwm cov khoom lag luam kho mob pov tseg vim tias nws tsis tau pom lwm cov ntaub ntawv uas muaj peev xwm sib tw nrog PVC saib raws qhov kev ua tau zoo thiab tus nqi.
