... heating plates,nozzles magnet design changable,hot force flow adj Welding bga chip machine optical alignment system ZM-R68081Total Power4850W2Top ... : optical alignment for sure precisely positioning and high success welding rateb: liner slide,X,Y,Z axis movable to ... , micrometer,autofocus all achieved automatically.i: alarm sound while welding or dewelding finished.j: memorized many groups data of BGA ...