How to adjust four screws to achieve power increase and perfect beam mode - laser tube

#laserequipment #60w #markingmachine #laser #lasertube #Beam #TEM00 #Cutting #CO2 #lasercutting #laserengraving #CNCmachine #woodcutting #Acryliccutting #fabriccutting TEST SUBJECT： Model：HLC130 Power:130w/170W Length:1690mm Diameter:80mm BY GENTLY PRESSING THE SCREW, IF THE POWER RISES, TIGHTEN THE SCREW.