Kei te kaha te whakatairanga a ngā umanga hanga PVC konupūmā waro nui o te motu i te rautaki whanaketanga o te ōhanga porowhita, te whakanui me te whakapakari i te mekameka ahumahi me te PVC konupūmā waro hei uho, me te whai kia hanga he rōpū ahumahi nui e whakauru ana i te "waro-hiko-tote". I tēnei wā, kei te whanake haere ngā pūtake o ngā hua vinyl vinyl i Haina i roto i tētahi huarahi kanorau, kua whakatuwherahia hoki he ara hou mō te hoko rauemi mata mō te umanga PVC. Nā te waro-ki-olefins o te motu, te methanol-ki-olefins, te ethane-ki-ethylene me ētahi atu tukanga hou kua nui ake te tuku ethylene.
