Ho ea ka lipalo-palo tsa 2020, kakaretso ea lefats'e ea tlhahiso ea PVC e fihlile ho lithane tse limilione tse 62 mme kakaretso e fihlile ho lithane tse limilione tse 54. Phokotso eohle ea tlhahiso e bolela hore matla a tlhahiso ha aa ka a sebetsa 100%. Ka lebaka la likoluoa tsa tlhaho, maano a lehae le lintlha tse ling, sephetho se tlameha ho ba tlase ho matla a tlhahiso. Ka lebaka la theko e phahameng ea tlhahiso ea PVC Europe le Japane, matla a lefats'e a tlhahiso ea PVC a tsepamisitsoe haholo Asia Leboea-bochabela, moo China e nang le hoo e ka bang halofo ea matla a tlhahiso ea PVC lefatšeng ka bophara.
Ho ea ka lintlha tsa moea, ka 2020, Chaena, United States le Japane ke libaka tsa bohlokoa tsa tlhahiso ea PVC lefatšeng, ka matla a tlhahiso a etsang 42%, 12% le 4% ka ho latellana. Ka 2020, likhoebo tse tharo tse holimo molemong oa tlhahiso ea selemo le selemo oa PVC e ne e le Westlake, shintech le FPC. Ka 2020, matla a tlhahiso ea selemo le selemo a PVC e ne e le lithane tse limilione tse 3.44, lithane tse limilione tse 3.24 le lithane tse limilione tse 3.299 ka ho latellana. Taba ea bobeli, likhoebo tse nang le matla a tlhahiso ea lithane tse fetang limilione tse 2 li kenyelletsa inovyn. Kakaretso ea matla a tlhahiso ea Chaena ke lithane tse ling tse limilione tse 25, tse nang le tlhahiso ea lithane tse limilione tse 21 ka 2020. Ho na le baetsi ba PVC ba fetang 70 Chaena, 80% ea bona ke mokhoa oa calcium carbide le 20% ke mokhoa oa ethylene.
Boholo ba mokhoa oa calcium carbide o tsepamisitsoe libakeng tse ruileng ka mehloli ea mashala joalo ka Inner Mongolia le Xinjiang. Sebaka sa semela sa ts'ebetso ea ethylene se fumaneha libakeng tse lebopong la leoatle hobane VCM kapa ethylene e hloka ho romelloa kantle ho naha. Bokhoni ba tlhahiso ea China bo nka hoo e batlang e le halofo ea lefats'e, 'me ka ho atolosoa ho tsoelang pele ha ketane ea liindasteri tse holimo tsa Chaena, bokhoni ba tlhahiso ea PVC ea mokhoa oa ethylene bo tla tsoela pele ho eketseha,' me Chaena e tla tsoela pele ho senya karolo ea machaba ea PVC.
Nako ea poso: May-07-2022