Themachineisautomaticcontrolmachine,thewholemachineprocessfromrawmaterialstogasmaskfilter.automaticweldingroundfiltershape.theproductsweldingstrongandcuttingtidyandclean.It"sCapacityoverthanthreetimesthetraditional,Highquality,lowerpriceandeasyoperating.WorkingProcess:Rawmaterialsontorack--AutoweldingbreathValve--logoprinting--autoinstallplasticholder--weldingfilterbody--autopunching--finishedproducts.