１９８８年沂南轴承厂进行改革，作为创始人之一的张 元开怎么也没想到自己竟被改到了二线的位置上。想当年，张元开和他以打铁为生计的几个伙伴成立起了张庄铁业社，所生产的“一块玉”牌镰刀誉满蒙山内外。６０年代末，他们在九只红炉干工业、创大业的基础上创建了沂南县最早 Yinan Bearing Factory in 1988 to carry out the reform, as one of the founders of Zhang Yuan Kai did not think he actually was changed to second-tier position. In the past, Zhang Yuan Kai and his several friends to fight for the livelihood of the iron set up Zhangzhuang Iron and Steel Club, produced by the “one piece of jade” brand sickle full of Mengshan both inside and outside. In the late 1960s, they created the earliest Yinan counties on the basis of nine red furnace industry