Kusukela ngo-2019 kuya ku-2023, isilinganiso sokukhula sonyaka somthamo wokukhiqiza we-PVC sasingu-1.95%, futhi umthamo wokukhiqiza ukhuphuke usuka kumathani ayizigidi ezingu-25.08 ngo-2019 waya kumathani ayizigidi ezingu-27.92 ngo-2023. ngenxa yentengo ephansi yemithombo yangaphandle kanye nobunzima bokushintsha eminye imikhiqizo esezingeni eliphezulu.

Phakathi neminyaka emithathu ka-2021-2023, amandla okukhiqiza e-PVC anda, kuyilapho ukuthengwa kwamanye amazwe kukhuphuka ngokushesha, ngoba amanye amadivaysi angaphandle athintwa amandla amakhulu, ukunikezwa kwathinteka, futhi intengo yayingenayo inzuzo yokuncintisana esobala, futhi ukuncika kwamanye amazwe kwehla ku-force majeure. ngaphansi kuka-2%. Ngesikhathi esifanayo, kusukela ngo-2021, imakethe yokuthekelisa ye-PVC yaseChina yanda ngokushesha, futhi ngaphansi kwenzuzo yamanani, iye yathandwa yi-India, i-Southeast Asia namanye amazwe, futhi isimo sokuthekelisa se-PVC sinomthelela okhulayo emakethe yasekhaya. Umthamo okhula ngokushesha wezinto ze-ethylene ulandisa ingxenye enkulu, ngaleyo ndlela uqinise ukuncintisana phakathi kwemikhiqizo yenqubo ye-calcium carbide ne-ethylene. Ngokombono wokusatshalaliswa kwesifunda kwamandla amasha okukhiqiza, amandla amasha okukhiqiza ngo-2023 agxile kakhulu eShandong naseNingizimu China.

Umthamo wokukhiqiza waminyaka yonke wezi-2023 ngokuya ngokuhlukaniswa kwenqubo, ikakhulukazi ezinkampanini ze-calcium carbide, ezibalelwa ku-75.13% womthamo wokukhiqiza kazwelonke, ngoba iChina iyizwe elinamalahle amaningi namafutha amancane, futhi amalahle asatshalaliswa ikakhulukazi esifundeni esisenyakatho-ntshonalanga, inyakatho-ntshonalanga ithembele kumalahle acebile, izinsiza ze-calcium carbide, futhi amabhizinisi ngokuvamile ayizindawo ezisekelayo ezihlanganisiwe, ngakho umthamo wokukhiqiza we-PVC esifundeni esisenyakatho-ntshonalanga makhulu kakhulu. INyakatho ye-China, i-East China, i-South China eminyakeni yamuva, umthamo omusha ngokuyinhloko umthamo wokukhiqiza i-ethylene, ngenxa yogu, ukuthutha okulula, ukungenisa impahla eluhlaza kanye nokuhamba.

Ngokombono wesifunda, isifunda esisenyakatho-ntshonalanga sisahamba phambili ngamathani ayizigidi eziyi-13.78 zamandla okukhiqiza. Ngokusho kwezinguquko zesifunda, i-South China yengeze amathani angu-800,000 ukuze igcwalise igebe lesidingo sendawo, ngalesi sisekelo, ukudluliswa kwezinsiza eNyakatho yeChina kuya engxenyeni yemakethe yaseNingizimu China kuncishisiwe, iNyakatho yeChina yengeza kuphela isethi yamathani angu-400,000 wemishini, nezinye izifunda. abanawo amandla amasha. Sekukonke, ngo-2023, iNingizimu China, iNyakatho yeChina kanye neNyakatho-ntshonalanga yeChina kuphela amandla okukhiqiza azokhula, ikakhulukazi eNingizimu yeChina, lapho ukwanda kwamandla okukhiqiza kunomthelela omkhulu. Umthamo omusha ngo-2024 uzoba seMpumalanga China.

2019-2023, amandla embonini ye-PVC yaseChina aqhubekile nokukhula, eqhutshwa ukwanda konyaka kokukhiqiza eminyakeni yamuva, umthamo wokukhiqiza we-PVC wasekhaya uqhubekile nokukhula, i-2019-2023 iminyaka emihlanu yokunwetshwa kwamandla amathani ayizigidi ezingu-2.84.

Ngenxa yoshintsho ekwandiseni amandla e-China amaphakathi kanye namaphethini okuphakela nokufunwa phesheya kwezilwandle, ukuthutha olwandle kanye nezinye izici nezinkomba, ukuthengwa kwempahla evela e-China kwehle ngokuqhubekayo, kanti ukuncika kwamanye amazwe kulindeleke ukuthi kwehle kuye ku-1.74% ngo-2023. Ngokuhamba kwesikhathi, ne- ukwanda kokuhlinzekwa kwasekhaya, ukwenziwa kwekhwalithi yomkhiqizo, igebe lekusasa lokuhlinzekwa kwasekhaya lizoncipha kancane kancane.