... , etc 3. Assembly full inspection: to make sure every unit with power ,without low voltage, without bad led indicator, low ripple, good ... inspection after burn-in: to make sure every unit with high temperature resistance, with power ,no bomb unit, no high voltage, no low ... , etc 6. Visual full inspection: to make sure no scratched case, no cracked wires ,no missing screw, no label misaligned, etc2 ...