Educational seminars and training of others in the operation, maintenance and repair of air and refrigeration compressors, vacuum systems and related equipment

maintenance and repair of air and refrigeration compressors, vacuum systems and related equipment

Electric Generators and Electric Welders

AIR COMPRESSORS; [ REFRIGERATION COMPRESSORS; ] [COMPRESSED AIR GENERATORS;] AND COMPRESSED AIR OPERATED TAMPERS, PAVING BREAKERS, TRENCHERS, DIGGERS, ROCK DRILLS AND TRAILER-MOUNTED VERSIONS OF THE FOREGOING

AIR COMPRESSORS