shenyang zhongjie machine tool factory is located in shenyang city, liaoning province. it is a professional rocker arm drilling machine manufacturer in china. zhongjie rocker arm drilling machine is famous at home and abroad for its reliable quality, stable performance and high accuracy. the leading models of shenyang zhongjie drill machine factory are: zhongjie rocker arm drilling machine 3050, zhongjie rocker arm drilling machine 3040 and 3032 rocker arm drilling.