E whakaatu ana ngā raraunga hou, i te marama o Noema 2020, i piki ake te hanga PVC ā-rohe mā te 11.9% ki te whakataurite ki te wā kotahi o te tau kua hipa. Kua oti i ngā kamupene PVC te whakahou, kua whakauruhia ētahi whakaurunga hou ki ngā rohe takutai moana, kua piki ake te tere whakahaere o te umanga, kei te pai te ahunga whakamua o te mākete PVC ā-rohe, ā, kua tino piki ake te putanga o ia marama.
