Yuyao zhengyu auto parts co.,ltd located in beautiful yuyao city of Ningbo, we are specialized in all kinds of non-standard auto hardware parts, mainly products have various of oil pipe joints and fittings, non-standard nuts and bolts, brake hoses, and cold heading blanks, etc. We have large cold heading machines, CNC lathes, measuring trucks, and full-automatic tapping machines, etc. we apply ourselves to using advanced technology and rich experiences to make the products with best ...