In 2021, TTA Company performed ECDA Surveys for PVGAS at Tien Hai, Thai Binh Provice. TTA Company was also in charged for another survey in 2017 and 2019. The surveys include: DCVG, ACVG, PCM, CIPS, Soil Resistivity Measurement and pH measurement.










In 2021, TTA Company performed ECDA Surveys for PVGAS at Tien Hai, Thai Binh Provice. TTA Company was also in charged for another survey in 2017 and 2019. The surveys include: DCVG, ACVG, PCM, CIPS, Soil Resistivity Measurement and pH measurement.
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