How can I get warranty service if the laser tube has an issue?

Within the warranty period, if there is a power problem of laser tube, please send us video that shows operating current, working status and factory label. The video can run starting from power meter, high-voltage end, low-voltage end, through to factory label.
When it comes to laser spot problem, please test the light spot quality at the light outlet of the laser tube. The light spot tested at second reflector, third reflector and focus lens will not be recognized.