It received positive ratings for quality, innovation and technology in particular, as well as for competitiveness and logistics. The two companies have had a successful business relationship for over ten years; ebm-papst was previously designated a premium supplier by Rational AG twice, in 2012 and 2015. Rational AG is the world market leader in the combi steamer segment for the thermal preparation of food in restaurants, professional kitchens, store chains and catering businesses. Motors from ebm-papst with GreenTech EC technology ensure optimum air circulation in the cooking chamber. The smoothly adjustable EC motors can be operated at any speed and change their direction of rotation frequently for increased turbulence without additional circulation aids and more uniform cooking results.