天津快乐十分开奖图

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                科研实力

                • 序号 专利名称 申请号 申请公布日
                • 1 硅溶胶精密天津快乐十分开奖图用锆砂莫来砂型芯及其制作方法 CN201410274366.8 2014/12/10
                • 2 低扭矩自动回位球阀 CN201420214872.3 2014/11/12
                • 3 一种新型三通球阀 CN201420214858.3 2014/10/29
                • 4 大规格法兰阀盖浇注系统 CN201020691845.7 2011/8/10