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gold belt detector that can detect at 40 m 1

Apr 09, 2021 The ALPHA Log-range Metal Detector has a special search interface that displays the results and coordinates of the ... This system can detect gold, treasures, archaeological and mineral materials underground. ... 3 m, 5 m, 7 m, 10 m, 12 m, 14 m, 16 m, 18 m, 20 m, 22 m,25 m, 27 m, 30 m, 32 m, 35 m, 37 m, 40 m, 45 m, 50 m. Long Distance It ...