Tietjen Verfahrenstechnik GmbH is a German company with its roots in the milling and graining industry. Since 1959 we delivered hammermills and peripheral components worldwide to more than 2000 installations. Our three business units focus on machinery and process engineering for the production of livestock / animal feed on the one hand and the food recycling and biogas industry on the other. This is supplemented by our service division, offering reliable on-site and remote services as well as consultancy based on an in-depth knowledge in dust separation, ventilation and explosion protection.