Trefa Continu Aerating Systems is company that is highly specialized in the production of aerating machines and related machinery, tailored to the requirements of the customer. Trefa’s experience in aerating a great variety of products goes back to the early 60’s. Trefa is the inventor of the ‘rotor-stator’ principle, applied in mixing & foaming machines. Over the years Trefa has continuously improved the original design. One of these improvements was the development of the pre-mix chamber. All Trefa mixers are CE approved by type examination performed by the Quality assurance firm “Kema”. Flexibility, fast delivery and fulfillment of customer requirements in terms of machine design and control are the cornerstone of Trefa’s existence. To meet these high expectations and quality demands all machine parts are designed and manufactured ‘in-house’.