Ho tloha 2019 ho isa 2023, sekhahla sa kholo ea selemo le selemo sa tlhahiso ea PVC e ne e le 1.95%, mme matla a tlhahiso a eketsehile ho tloha ho lithane tse limilione tse 25.08 ka 2019 ho isa ho lithane tse limilione tse 27.92 ka 2023. ka lebaka la theko e tlaase ea mehloli e tsoang linaheng tse ling le bothata ba ho nkela lihlahisoa tse ling tse phahameng.

Nakong ea lilemo tse tharo tsa 2021-2023, bokhoni ba tlhahiso ea PVC bo ile ba eketseha, ha thepa e tsoang linaheng tse ling e ile ea eketseha ka potlako, hobane lisebelisoa tse ling tsa kantle ho naha li ile tsa angoa ke matla a maholo, phepelo e ile ea ameha, 'me theko e ne e se na molemo o totobetseng oa tlhōlisano,' me ho itšetleha ha thepa ho ile ha theohela ho ka tlase ho 2%. Ka nako e ts'oanang, ho tloha ka 2021, 'maraka oa kantle ho naha oa China oa PVC o eketsehile ka potlako,' me tlas'a molemo oa theko, o ratoa ke India, Asia Boroa-bochabela le linaha tse ling, 'me boemo ba ho romela thepa ea PVC bo na le phello e ntseng e eketseha' marakeng oa malapeng. Matla a ntseng a eketseha ka potlako a thepa ea ethylene e baka karolo e kholo, kahoo e matlafatsa tlhōlisano pakeng tsa lihlahisoa tsa calcium carbide le ethylene process. Ho latela pono ea kabo ea tikoloho ea matla a macha a tlhahiso, matla a macha a tlhahiso ka 2023 a tsepamisitsoe haholo Shandong le China Boroa.

2023 matla a tlhahiso ea selemo le selemo ho ea ka phapang ea ts'ebetso, haholo-holo e tsepamisitsoeng lik'hamphaning tsa calcium carbide, tse ikarabellang bakeng sa 75.13% ea matla a tlhahiso ea naha, hobane Chaena ke naha e nang le mashala a mangata le oli e fokolang, 'me mashala a ajoa haholo-holo karolong e ka leboea-bophirimela. leboea-bophirimela ho itšetlehile ka mashala a mangata, lisebelisoa tsa calcium carbide, 'me likhoebo hangata li kopantsoe ke lisebelisoa tse tšehetsang, kahoo matla a tlhahiso ea PVC karolong e ka leboea-bophirimela e batla e le khōlō. Chaena Leboea, Chaena Bochabela, Chaena Boroa lilemong tsa morao tjena, matla a macha ke haholo-holo bokhoni ba tlhahiso ea ethylene, ka lebaka la lipalangoang tse lebōpong la leoatle, lipalangoang tse bonolo, ho kenya thepa e tala le lipalangoang.

Ho ea ka pono ea libaka, sebaka se ka leboea-bophirimela se ntse se le boemong ba pele ka lithane tse limilione tse 13.78 tsa bokhoni ba tlhahiso. Ho ea ka liphetoho lebatowa, South China a phaella ka ho 800.000 lithane tse ho tlatsetsa tlhokeho ea sebaka lekhalo, motheong ona, phetiso ea mehlodi ya ka North China ho South China 'maraka karolo e fokolang, North China feela a phaella ka sete ya 400.000 lithane tse thepa, le libaka tse ling. ha ba na bokhoni bo bocha. Ka kakaretso, ka 2023, ke feela South China, North China le Northwest China matla a tlhahiso a tla eketseha, haholo-holo Chaena Boroa, moo keketseho ea tlhahiso ea tlhahiso e nang le tšusumetso e kholoanyane. Bokhoni bo bocha ka 2024 bo tla ba haholo China Bochabela.

2019-2023, bokhoni ba indasteri ea China ea PVC bo ile ba tsoela pele ho hola, bo susumetsoang ke keketseho ea selemo le selemo ea tlhahiso lilemong tsa morao tjena, matla a tlhahiso ea PVC ea lapeng a ntse a tsoela pele ho hola, 2019-2023 lilemo tse hlano tsa katoloso ea bokhoni ba lithane tse limilione tse 2.84.

Ka lebaka la liphetoho tsa katoloso ea matla a mahareng a China le phepelo le tlhokeho ea mose ho maoatle, thepa ea leoatleng le lintlha tse ling le matšoao, thepa e tsoang kantle ho naha ea China e ntse e theoha, 'me ho lebeletsoe hore ts'epeho ea thepa e tsoang kantle e tla theohela ho 1.74% ka 2023. keketseho ea phepelo ea lapeng, ho ntlafatsa boleng ba sehlahisoa, lekhalo la nakong e tlang la phepelo ea lapeng le tla fokotseha butle-butle.