"Ningbo Ouya-Daocheng Autoparts Industry Co.,Ltd."was estabished in 1996.Our production range now includes wheel bolts and wheel nuts,wheel balance weight,all kinds of tire valves,tire repair tools and other wheel accessories.Our products have been exporting to United States,Japan,Europe,South America,South East Asia and Africa,etc.We have passed ISO9001:2000 approved by TUV-Nord and TS 16949:2002 of SGS's approval.