film contains:
1. Air compressor principle
2. Air compressor selection: no oil VS oil
3. How to choose the right horsepower (HP) and capacity (L)
4. Air duct and air gun installation
5. Air compressor use demonstration

equipment:
1.GIANT LI silent box form air compressor 5HP 60L
2.GIANT LI mute oilfree air compressor 3HP 25L
3.Milwaukee lithium battery area floodlights
4.BOSJOB inverter (frequency conversion) PLASMA 90A
5.3M Elite central dust collecting eccentric grinding machine
6.3M industrial protective helmet G3001NUVGU
7.3M peltor X1P5 Hard Hat Earmuffs
8.3M Durable MultiPurpose DIY Gloves MS100XL