Car factory, welding, hammer knocking: Listen & Download Car factory, welding, hammer knocking .mp3 Error! Change your browser, please! ⇓ Download Car factory ⚠ Bottling plant ⚠ Grind metal on a grinding machine in a ⚠ Mechanical lift ⚠ Mill for grinding grain, Brewing unit ⚠ Automatic telephone switch ⚠ Forklift in motion ⚠ Spectrograph ⚠ Forklift approaching ⚠ Small centrifuge ⚠ Electric generator (hum) ⚠ Box making machine ⚠ ★★★★★