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The YSWPB-AS AIR SHOWER PASS BOX characterizes as double lock betweenthe air brake and door,which enable the box has a better airflowprevention ability than traditional pass box.Moreover,articles will be airshowered before passing into the clean room,thus dusts and microbes onthe articles willbe defended efficiently. Dusts and microbes on the articles willbe prevention ability than traditionalpass box.Moreover,articles will be air showered before passing into theclean room,thus dusts and microbes on the articles will be defendedefficiently.