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江苏省国营淮海石油机械厂研制的FZ35-14单闸板液动防喷器和DYF-2.5带压试片取放器,1990年12月在南京通过
The FZ35-14 single-gate hydraulic blowout preventer and DYF-2.5 pressured sample picker developed by Jiangsu Huaihai Petroleum Machinery Factory were passed in Nanjing in December 1990