5.[bbe] So they took some dust from the fire, and placing themselves before Pharaoh, Moses sent it out in a shower up to heaven; and it became a skin-disease bursting out on man and on beast.
6.Air shower constrution can clean dust on person or goods,reduce dust capacity bring to cleanroom.and have switch function so as to avoid the no-clean air into the room from the door.Cooperate with clean air-conditioner system,lnsure the cleanroom can get the clean class.
