... ,ideal and perfect vacuum conveying equipment of powder material, granular material, powder mixture. Vacuum charing machine can automatically transport ... of vacuum pump(no oil, no water), stainless steel suction Tsui, transmission hose, PE filter (or 316L stainless ... capacity is tested by dry flour powder, and 80-120 mesh, proportion is 1g/cm3. Powder Vacuum Conveyor Charging Machine