Kusukela ngo-2010 kuya ku-2014, umthamo wokuthunyelwa kwe-PVC eShayina wawucishe ube ngamathani ayisigidi njalo ngonyaka, kodwa kusukela ngo-2015 kuya ku-2020, umthamo wokuthunyelwa kwe-PVC eShayina wehla njalo ngonyaka. Ngo-2020, iShayina yathumela cishe amathani angu-800000 e-PVC, kodwa ngo-2021, ngenxa yomthelela wobhubhane womhlaba wonke, iShayina yaba ngumthengisi we-PVC omkhulu emhlabeni, ngomthamo wokuthunyelwa kwamanye amazwe ongaphezu kwamathani ayizigidi ezingu-1.5.
Esikhathini esizayo, iShayina izoqhubeka nokudlala indima ebaluleke kakhulu ekuthumeleni i-PVC kwamanye amazwe emhlabeni jikelele.