... DHL , FEDEX , TNT or by AIR .Function:1)applicationMetal jewelry,fiber costume ,bedroom equipment ,cosmetic etc.2)time requirementIt takes around ... nature stone(α,β,γ).4)structure ResultIONS/CM3 LTD displayTo present resultLightMore high rate, more frequent Flash.BatteryLife around 1 year 5) ... TemperatureWorking temperature:-10~+50CStorage temperature:-20~+60C Hot selling high quality ION TESTER