... -made product 2.ISO9001 3.MOQ:1pc portable x-ray film viewer I. Product Characteristics LK -LED ... resolution of the defects.5,With inductive automatic adjustment When a film is put in ... shortcomings of potentiometer after frequent regulation.8,Brightness automatic memory, do not need to adjust again ... and again.9,Low noise fan, automatic adjusting speed with heat.10,Voltage stabilization, ...