... -for airconditioner and refrigeration system -high precision -long lifespan knurling pin, for mould and die Products guide pins, guide bushings, ejector ... .ChenAddress: Room 908, Yihua Mansion, No. 215, Huanghai Xisi Road, F.T.Z., Dalian, Liaoning, China (Mainland) Tel: 86-411-39248908Fax ...