Stable and reliable parameters precision Bidirectional geophone Sensor

Bidirectional geophone Special Sensor Bidirectional geophone GD - 8J Fast detailed description: 1 low distortion 2 property superiority and stable 3 quota precise 4 Reasonable design 5 wide frequency band, 6 signal received is plentiful 7 Applied to all precise seismic exploration test methode Description: GLI Land Geophone String is a very ideal sensor for Land oil exploration. Its good performance simple operating,stable and reliable parameters,light weight,and reasonable