Zambiri zamakampani aku China ma valve

Pofika chaka cha 2021, mtengo wapachaka wamakampani a valve ku China wadutsa 210 biliyoni kwazaka zambiri zotsatizana, ndikukula kwamakampani kupitilira 6%.
Chiwerengero cha opanga ma valve ku China ndi aakulu, ndipo chiwerengero cha makampani akuluakulu ndi ang'onoang'ono a valve m'dziko lonselo akuti ndi oposa 10000. Kufulumizitsa ndondomeko ya ndende ya mafakitale wakhala cholinga cha makampani a valve ku China.Ponena za zotulutsa, zawonjezeka pang'onopang'ono m'zaka zaposachedwa.Ma valve a dziko lonse adatulutsa matani 7.86 miliyoni mu 2017, matani 8.3 miliyoni mu 2019, matani 8.5 miliyoni mu 2020 ndi matani 8.7 miliyoni mu 2021.