The DUP Group has been founded in 1991 and has locations in Austria and Switzerland. DUP is the market leader in purchase and sales of second-hand stationary air compressors and compressed air plants in Europe. DUP is dealing mainly with the brands Atlas Copco, Kaeser, Boge and CompAir. A focus also lies in the supply of Atlas Copco genuine spare parts. Customers are end users and resellers all over the world. air4rent serves the German-speaking area in the rental business. The rental fleet contains air compressors, oil-free and oil-injected, as well as compressed air dryers and accessories of brand Atlas Copco up to 500 kW drive power. Rental depots are located in Switzerland, Austria, Germany, Italy and Bulgaria. S-KOM works in the regional market in Western Austria and Eastern Switzerland. S-KOM offers service, planning, optimisation and sales of air compressors , compressed air plants and vacuum solutions.