Makampani opanga ma PVC akuluakulu a calcium carbide m'dziko muno akulimbikitsa mwamphamvu njira yopangira chuma chozungulira, kukulitsa ndikulimbitsa unyolo wa mafakitale ndi calcium carbide PVC ngati maziko, ndikuyesetsa kumanga gulu lalikulu la mafakitale lomwe limaphatikiza "malasha-magetsi-mchere". Pakadali pano, magwero a zinthu za vinyl vinyl ku China akukula m'njira zosiyanasiyana, zomwe zatsegulanso njira yatsopano yogulira zinthu zopangira mafakitale a PVC. Ma coal-to-olefins am'nyumba, methanol-to-olefins, ethane-to-ethylene ndi njira zina zamakono zapangitsa kuti ethylene ikhale yochuluka.
