We, Shandong Jiyang Machinery Factory(Hereinaftre referred to as Jiyang Machinery),  is a share-holding enterprise located in Jinan ,Shandong Porvice,China. We started business in 1958 and have 15-year history in manufacturing such trailer accessories as hitch balls, ball couplers and so on. Now they sell well in U.S.A., Canada, Australia, New Zealand,ect. The four main buildings are used for warehouses and business buildings as well as workshops. The export business of our factory mainly covers these products such as: Hitch ball, ball coupler, hitch receiver, tow hook, receiver rack, safety cable and other relevant trailer accessories.  Our hitch ball and ball coupler are designed and manufactured with the American Regulation of V-5 & V-19.The material could be 1020,1045 steel grade or 304# Stainless Steel