True Leadership and Experience With several years’ experience in vacuum reflow, Heller Industries is recognized as the world leader in vacuum reflow technology. …Voidless Oven 8 Convection Zones + 3 IR Zones + 3 Cool Zones, Total Length 589cm 2043MK5-VR Vacuum Reflow Oven 10 Convection zones oven + 3 IR zones + 3 Cool Zones, Oven…