I gave you a couple of good examples of industries that use an air compressor painting to spray paint sandblasting to blast away paint using an air compressor and abrasive particles the automotive industry uses it to inflate tires and to run there are tools that work on. Paint and body shops use them to machine Auto body and spray spray paint. The medical profession use as an air compressor to help person breathe. The post office and other shipping companies use an air compressor to inflate their shipping balloons.