Circular knitting machine: Listen & Download Circular knitting machine .mp3 Error! Change your browser, please! ⇓ Download Milling machine ⚠ Lowers forks, Forklift raises ⚠ Stitching machine ⚠ Small centrifuge ⚠ Forklift drives by ⚠ Grind metal on a grinding machine in a ⚠ Factory work, general noise ⚠ Signal for lunch at the factory ⚠ Gas welding ⚠ Stamping press ⚠ Electric welding ⚠ Automatic folder ⚠ ★★★★★