Hauv tsev loj-calcium carbide PVC cov tuam txhab tsim khoom siv zog txhawb txoj kev loj hlob ntawm kev lag luam ncig, nthuav thiab ntxiv dag zog rau kev lag luam saw nrog calcium carbide PVC ua lub hauv paus, thiab siv zog los tsim kom muaj kev lag luam loj hauv kev sib koom ua ke "thee-hluav taws xob-ntsev" .Tam sim no, cov peev txheej ntawm cov khoom siv yas yas hauv Suav teb tab tom txhim kho nyob rau hauv ntau yam kev coj ua, uas kuj tau qhib txoj hauv kev tshiab rau kev yuav khoom ntawm cov khoom siv raw rau PVC kev lag luam. Hauv tsev thee-rau-olefins, methanol-to-olefins, ethane-to-ethylene thiab lwm yam txheej txheem niaj hnub no tau ua rau cov khoom siv ethylene ntau dua.
