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In view of the defect of existing preventing run-circle devices such as that it can not collect the signal of the run-circle of mine car, and can not catch the mine car that is out of control, always has a mis-operation and so on. Combining the advantages of the existing preventing run-circle devices both at home and abroad, on the premise of that it does not violate the rule of “the preventing run-circle...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.