... cord:4M 5.Certificate:CE/GS/ROHS/SAA Characteristic:1.The unique in-air tube (bent pipe), incorporated with design dust ... bag, keep filter from dust,keep superior suction performance;2. ... static capability ,acid-proof , alkali-proof ,anti-corrosion and more;4.Adopt professional Vacuum Cleaner’s motor , water absorption , oil-Absorbing ,acid ...