Bidirectional geophone Special Sensor Bidirectional geophone GD - 8J

Bidirectional geophone Special Sensor Bidirectional geophone GD - 8J Fast detailed description: 1 Applied to all precise seismic exploration test methode 2 property superiority and stable 3 signal received is plentiful 4 quota precise 5 wide frequency band, 6 low distortion 7 Reasonable design 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