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a warm welcome! The mud non landing system produced by Baoji Yidong Petroleum Machinery Factory has been widely used in the oil field. From July 16th |
a warm welcome! The mud non landing system produced by Baoji Yidong Petroleum Machinery Factory has been widely used in the oil field. From July 16th to 20th, a user symposium was held at the Yushun 50012 drilling team in Wushen Banner! |