1.infrared+preheating 2.control system and preheathing system is sprated ,quality is more stable 3.soft light YAXUN 866D Infrared+preheater character:1.STN -LCD screen display of all functions2.special infrared heating,string through strong and difficult to damage to peripheral devices,devices to heat evenly,breaking down the traditional hot air welding machine,the shortcomings of thermal ...