Signal for lunch at the factory: Listen & Download Signal for lunch at the factory .mp3 Error! Change your browser, please! ⇓ Download Circular knitting machine ⚠ Compressor, start, run, shutdown ⚠ Vibrosieve at the factory ⚠ Hydraulic activator ⚠ The atmosphere of the factory, rattling ⚠ Grind metal on a grinding machine in a ⚠ Machine engine gaining momentum ⚠ Spectrograph ⚠ Book press ⚠ Canning machine ⚠ Automatic folder ⚠ Standby, on, off, Forklift ⚠ ★★★★★