Ningbo Hanker Imp. &; Exp. Co., LTD. is a professional tire repair products manufacturer in China. Our main products including tire repair, tire repair tools, tire repair kits, tire repair materials, tire valve, valve chalk, valve tools, tire gauge, hammer, tire spanner, wheel weighters, valve key, valve core , tire seal, tire patch, air hose, air blow gun, tire changer , safety valve, tread depth gauges etc.