Wahi a nā helu helu ma 2020, ua hiki i ka honua holoʻokoʻa ka nui o ka hana PVC i 62 miliona tons a ʻo ka huina o ka hopena i hiki i 54 miliona tons.ʻO ka hōʻemi ʻana i ka huahana, ʻaʻole i holo ka mana hana i 100%.Ma muli o nā pōʻino kūlohelohe, nā kulekele kūloko a me nā kumu ʻē aʻe, pono e emi ka huahana ma mua o ka hiki ke hana.Ma muli o ke kumu kūʻai kiʻekiʻe o PVC ma ʻEulopa a me Iapana, ʻo ka nui o ka mana hana PVC honua i hoʻopaʻa nui ʻia ma Northeast Asia, kahi o Kina i ka hapalua o ka mana hana PVC honua.
Wahi a ka ʻikepili makani, i ka makahiki 2020, ʻo Kina, ʻAmelika Hui Pū ʻIa a me Iapana nā wahi hana PVC koʻikoʻi i ka honua, me ka mana hana e helu ana no 42%, 12% a me 4% kēlā me kēia.I ka makahiki 2020, ʻo nā ʻoihana kiʻekiʻe ʻekolu i ka mana hana makahiki PVC honua ʻo Westlake, shintech a me FPC.I ka makahiki 2020, he 3.44 miliona tons, 3.24 miliona tons a me 3.299 miliona tons ka PVC i ka makahiki 2020.ʻO ka lua, ʻo nā ʻoihana me ka mana hana ʻoi aku ma mua o 2 miliona tons e komo pū kekahi inovyn.ʻO ka nui o ka nui o ka hana ʻana o Kina he 25 miliona mau tons, me ka hoʻopuka ʻana o 21 miliona tons i 2020. Aia ma mua o 70 mau mea hana PVC ma Kina, 80% o lākou he calcium carbide method a he 20% he ethylene method.
Hoʻopili ʻia ka hapa nui o ke ʻano calcium carbide ma nā wahi waiwai i nā kumu lanahu e like me Inner Mongolia a me Xinjiang.Aia ka wahi kanu o ke kaʻina hana ethylene ma kahakai no ka mea pono e lawe ʻia mai ka VCM a i ʻole ka ethylene.Ma kahi o ka hapalua o ka honua ka mana hana o Kina, a me ka hoʻonui mau ʻana o ke kaulahao ʻoihana o luna o Kina, e hoʻonui mau ana ka mana hana PVC o ka ethylene method, a e hoʻomau ʻo Kina i ka hoʻopau ʻana i ka māhele PVC honua.
Ka manawa hoʻouna: Mei-07-2022