Posachedwapa, mothandizidwa ndi mphepo yamkuntho Laura, makampani opanga PVC ku US adaletsedwa, ndipo msika wogulitsa kunja wa PVC wakwera.Mphepo yamkuntho isanachitike, Oxychem idatseka chomera chake cha PVC ndikutulutsa kwapachaka kwa mayunitsi 100 pachaka.Ngakhale idayambiranso pambuyo pake, idachepetsanso zina mwazotulutsa zake. Pambuyo pokwaniritsa zofunikira zamkati, kuchuluka kwa PVC kunja kwapadziko lonse kumakhala kochepa, zomwe zimapangitsa kuti mtengo wa PVC upite patsogolo.Mpaka pano, poyerekeza ndi mtengo wapakati mu August, msika wa US PVC wogulitsa kunja wakwera pafupifupi US $ 150 / tani, ndipo mtengo wapakhomo wakhalabe.
