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江汉机械研究所设计、江苏海门石油机械厂生产的大庆130钻机用新型气控箱全部采用新型气动元件,操作灵活。箱体及气
Jianghan Institute of Machinery Design, Jiangsu Haimen Petroleum Machinery Factory Daqing 130 drilling rig with a new type of pneumatic control box all new pneumatic components, flexible operation. Box and gas