... ,3L,4L,6L,9L 7> Extinguisher accessory Extinguisher cylinder,Co2 fire extinguisher cylinder, Powder, Fire escape mask, Fire blanket, Fire suit,DCP extinguisher valve,Sucker,Spray tube,Pressure ... the blaze.I). Different of fire extinguisher Type:PowderWaterFoamCo2/Gas CylinderWelding or Stretching MaterialST12Carbon steel(CK20,CK45) or Alloy steel(34CrMo4) Port of ...