Protable. optics centring system made by special prism matching hi-precision auto focusing ccd for mounting. plc control, control temperature precision, function stable. when the intelligent filament, the ventilator does not transfer, the filament does not electrify. three independent heating zones, suitable lead-free process, no nozzle. upper heating system can be moving fro and back, up and down, and the bottom heating system can go up and down. sound hint function. big flow constant currrent cools pcb for better welding effort after heating finish, prevent pcb deformation. together with pc screen.( the real machine has screen)