Welding transformer, turning on, working, turning off: Listen & Download Turning on, Welding transformer, working, .mp3 Error! Change your browser, please! ⇓ Download Box making machine ⚠ Crusher ⚠ Automatic folder ⚠ Conveyor, conveyor belt ⚠ Factory Atmosphere ⚠ Power Plant Water Pumps ⚠ Electric industrial motor ⚠ The atmosphere of the factory, rattling ⚠ Grind wood with a grinder, noise in ⚠ Hydraulic machine up ⚠ Electric generator (hum) ⚠ Factory work, general noise ⚠ ★★★★★