Downhole power drilling tool 7LZ95X7.0
Promulgator
：fansheng Time：2017-08-02
Downhole tools for screw drilling tools 7LZ172CX7.0- II /CM/SF
Wear proof joint 3-1/2 5 5-1/2
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Downhole power drilling tool 7LZ95X7.0
Enhance the short circuit, 2 7/8-7 / 5/8 REG Pin
