... last at most 60 seconds,aeration speed of up,down chamber can be adjusted between 0-50L/seconds, ... aeration time is ≤50 seconds.The adjustment of up chamber airbag aeration pressure is between 0--1 ... Pa.Aeration of up chamber can be devided into five sections,each ... workbench temperature,vacuum of pumb,vacuum of up chamber,vacuum of down chamber) and fault of working condition, ...