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By certification 
Main Characteristic:
1. By utilizing the apparent resistivity parameters, it is widely used in hydrology, environmental protection, engineering geophysical exploration, metal and non-metal mineral resources exploration.
2. Easily can observe the apparent resistivity and apparent polarizability at the same time.
3. Measurement and control host can work standalone and it has all the functions of DZD-6A multi-functional direct current instrument.
1. By utilizing the apparent resistivity parameters, it is widely used in hydrology, environmental protection, engineering geophysical exploration, metal and non-metal mineral resources exploration.
2. Easily can observe the apparent resistivity and apparent polarizability at the same time.
3. Measurement and control host can work standalone and it has all the functions of DZD-6A multi-functional direct current instrument.
