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003031中瓷电子17.62475.98-2.59%-10.58%+4.57%+6.97% 301205联特科技18.48218.73+0.33%-4.3%+18.59%+37.57% 002929润建股份45.88.651.86+0.97%-4.3%+6.6%+31.83% 300895铜牛信息79.6076.34+19.99%+23.27%+36.1%+63.82% 002491通鼎互联4.74.110.35-2.17%-9.29%+7.92%+81.58% 002902铭普光磁66.25.923.96+10.01%+8.81%+13.82%+6.82%