Ningbo Ouya-Daocheng Autoparts Industry Co., Ltd is a leading manufacturer with 8 years'experience for all kinds of tire valves, valve accessories, tire repair tools & materials, tire gauges, wheel nuts, bolts, locks, wheel balance weights and other related auto parts. Our factory covers around 6,000 square meters and presently employ over 200 personnel. Holding ISO9001 certification, certified by Germany TUV, it is equipped with advanced manufacturing and testing facilities. The inspection team strictly controls all production procedures. Our factory is now one of the main suppliers...