Kwiminyaka yakutshanje, uphuhliso lweshishini le-PVC lungene kwibhalansi ebuthathaka phakathi kobonelelo kunye nemfuno. Umjikelo weshishini le-PVC laseTshayina unokwahlulwahlulwa ube ngamanqanaba amathathu. 1.2008-2013 Ixesha lokukhula ngesantya esiphezulu kwamandla emveliso kushishino. 2.2014-2016 ixesha lokurhoxiswa kwamandla emveliso 2014-2016 ixesha lokurhoxiswa kwamandla emveliso 3.2017 ukuya kwixesha langoku lebhalansi yemveliso, ibhalansi ebuthathaka phakathi kobonelelo kunye nemfuno.
