On November 2, Xuzhou Dun'an Heavy Industry held the second Innovation Proposal Achievement Commendation Conference of 2015, with all employees in attendance.
　　After review, a total of 7 innovation proposals won awards, covering a series of technical improvements to the main clamping, auxiliary clamping, and hydraulic cylinders of full rotary drilling rigs; all schemes are feasible. The personnel commended this time are: Wang Chengjian, Wang Lin, Zhang Yongmin, Yang Shengxiang, Chen Xinwei, and Zhang Xun.