China si ebupụ nke na-anwụ-mgbatị Ebu na-ugbu a lekwasị ke Europe, North America, Japan, South Korea na n'ebe ndị ọzọ, ụfọdụ ụlọ ọrụ mbupụ ebu ibu gua n'ihi na ihe karịrị 30% nke ngụkọta mmepụta valu .
