Ukushintshwa kwevolumu yokungenisa kweChina kusuka ngo-2004-2021 kungabonakala ezigabeni ezine ze-China zokungenisa ivolumu yevolumu kusukela ngo-2004, njengoba kuchaziwe ngezansi.

Isigaba sokuqala ngu-2004-2007, lapho isidingo saseChina samapulasitiki sasisezingeni eliphansi futhi ivolumu yokungenisa i-PEE yagcina izinga eliphansi lokusebenza, kanti ivolumu yokungenisa eChina laliphansi ngo-2008 lapho ukufakwa okusha kwasekhaya kwakugxilwe kakhulu futhi kwahlushwa inhlekelele enkulu yezimali.

Isigaba sesibili ngu-2009-2016, ukungeniswa kwe-China's PE kwangena esigabeni esizinzile sokukhula ngemuva kokwanda okukhulu. Ngo-2009, ngenxa ye-bailout ye-insout yemali yasekhaya neyamanye amazwe, ivolumu yezohwebo elijwayelekile lasekhaya lenyuke, ukufunwa kwempahla kwanda, okuvela kukhuphuke kakhulu, kulandelwa ukuguqulwa kwesilinganiso se-64.78% ngonyaka we-2010, okushintshaniswa kwe-RMB Ukukala kuqhubeke ukwazisa, okuhambisana nendawo yokuhweba yamahhala yase-Asean Isivumelwano soHlelo loHlelo bese kuncishiswa izindleko zokungenisa, ngakho-ke ivolumu yokungenisa kusukela ngo-2010 yaya ku-2013 ihlala iphakeme. Ngo-2014, umthamo omusha wokukhiqiza wasekhaya ukhula kakhulu, futhi ukukhiqizwa kwezinto ezibonakalayo ezibonakalayo ezifuywayo kwanda ngokushesha; Ngo-2016, iNtshonalanga yaphakamisa ngokusemthethweni unswinyo emithonjeni yase-Iran, nasemithonjeni yase-Irani yayizimisele ngokwengeziwe ukuthumela eYurophu ngamanani aphezulu, lapho ukukhula kwevolumu yokungenisa kwasekhaya kwehle.

Isigaba sesithathu ngu-2017-2020, ivolumu yokungenisa eChina ikhule kakhulu futhi ngonyaka we-2017, umthamo wokukhiqiza wasekhaya nowakwamanye amazwe uyanda futhi ugxile kakhulu ukukhiqizwa kwamandla aphesheya kwezilwandle, kusesekuthekelisa okubalulekile kwezwe lokukhiqiza emhlabeni ukudedelwa. 2017 Selokhu kungeniswa i-China Ukukhula kwevolumu ukuthi kukhuphuke kakhulu, kuya ku-2020, kusungulwe amadivaysi amakhulu okukhanya kwama-hydrocarbon, nokho, ngokubuka okukhulu okuthintwe kakhulu yi- "verw ubhubhane olungathi sína", ngenkathi Isimo sokuvimbela nokulawulwa kweChina esihlanzayo sizinzile futhi sifuna ukuhola ekubuyiselweni, izinsizakusebenza zaphesheya zithambekele ekunikezeni emakethe yaseChina ngamanani aphansi, ngakho-ke ivolumu yokungenisa yaseChina ligcina i-medium kuya ekukhuleni okuphezulu, naku-2020 China's PE Ngenisa ivolumu ifinyelela amathani ayizigidi eziyi-18,53. Kodwa-ke, izici zokushayela zokwanda kwevolumu yokungenisa i-PE kulesi sigaba ikakhulukazi ngokusetshenziswa kwezimpahla kunokuba kuqhutshwe yisidingo esisheshayo, kanye nokucindezela okuncintisanayo okuvela kancane kancane.

Ngo-2021, inkampani yokungenisa impahla yaseChina ingena esigabeni esisha, futhi ngokuya ngezibalo zamabhizinisi, ivolumu yokungenisa eChina izoba cishe amathani ayizigidi eziyi-14,59 ngonyaka ka-2021, ngaphansi kwamathani angama-2020. Ngenxa yethonya lobhubhane lomhlaba jikelele. Izwe lonke I-Shipping Amandla aqinile, izinga lokuhamba olwandle likhuphuke kakhulu, ligcwele ngethonya lentengo engeneme ye-polyethylene ngaphakathi nangaphandle kwemakethe, umthamo wokungenisa amakhaya uzoqhubeka ukwandisa, iwindi le-arbitrage Ngaphakathi nangaphandle kwemakethe kusenzima ukuvula, ivolumu yokungenisa yamazwe omhlaba izokuhlala iphansi, futhi ivolumu yokungenisa eChina ingena esiteshini esingezansi esikhathini esizayo.

Kusukela ngo-2004-2021 China PE athunyelwa ngevolumu yezinhlobo ngalunye, ivolumu yokungenisa ephelele yeChina PE iphansi kanti ama-amplitude makhulu.

Kusukela ngo-2004 kuya ku-2008, ivolumu yokuthumela ngaphandle ye-China yayingaphakathi kwamathani ayi-100,000. Ngemuva kukaJuni 2009, isilinganiso sentela yentela yentela kazwelonke yamapulasitiki athile nemikhiqizo yawo, njengenye i-ethylene armene, yakhulela ku-13%, futhi intshiseko yasekhaya ye-PE ethunyelwa ngentshiseko yanda.

Ngo-2010-2011, ukukhuphuka kokuthekelisa kwasekhaya kusobala, kepha ngemuva kwalokho, ukuthumela ngaphandle kwasekhaya ukubhekana nokukhiqizwa kwebhodlela lokukhiqizwa kwasekhaya, kanti kunzima ukuba nalo Ukwanda okukhulu kokuthekelisa ngokusekelwe kwizindleko, izidingo zekhwalithi kanye nezimo ezihamba phambili zokuhamba.

Kusukela ngo-2011 kuya ku-2020, ivolumu yokuthumela ngaphandle ye-China, iVolumu yayo yokuthumela ngokuyisisekelo yayiphakathi kwamathani angama-200,000 kuya kwangama-300,000. 2021, ivolumu yokuthumela kwelinye izwe laseChina ligxilisiwe, futhi okuthengiswayo okuphelele kwafinyelela amathani angama-510,000, ukukhuphuka kwamathani angama-260,000 ngokuqhathaniswa no-2020, ukukhuphuka ngo-104% unyaka nonyaka.

Isizathu sokuthi ngemuva kuka-2020, izitshalo ezinkulu zokucwengeka ezinkulu ze-hydrocarbon zizokwethulwa maphakathi nendawo, futhi amandla okukhiqiza azokhululwa ngempumelelo ngo-2021, futhi umkhiqizo we-China uzokhuphuka, ikakhulukazi izinsizakusebenza ezihlelelwe izitshalo ezintsha futhi akhuphuke ingcindezi yokuncintisana yemakethe. Ukuhlinzekwa kuyaqina, kanye nokuthengiswa kwezinsizakusebenza zaseChinese PE eSouth America nezinye izindawo ziyanda.

Ukukhula okuqhubekayo kwekhono lokukhiqiza kuyinkinga enkulu okufanele ibhekane nohlangothi oluhlinzekwayo lweShayina Pe. Okwamanje, ngenxa yezingqinamba zezindleko, izimfuno zekhwalithi kanye nezimo zokuhamba, kusenzima ukuthumela amakhaya PE, kodwa ngokukhula okuqhubekayo kwamandla okukhiqiza asekhaya, kubalulekile ukulwela ukuthengiswa kwaphesheya. Ingcindezi yomncintiswano we-Global PE ngokuzayo iya ngokuya iba nzima ngokwengeziwe, futhi iphethini yokuhlinzekwa kanye nokufunwa ezimakethe ezifuywayo nezangaphandle isadinga ukunakwa okwengeziwe.