A TEC Production and Services GmbH is an engineering and technologies company with focus on optimisation and efficiency improvement of cement plants. The major competence of A TEC lies in the pyroprocess of the cement kiln. A TEC’s expertise reaches from optimal process- and mechanical design to fuel optimisation and alternative fuels implementation. Besides A TEC’s core business of cement plant optimisation, A TEC provides consultancy and overall project management and supervision for Greenfield and Brownfield projects (e.g. EPCM), including assistance in tendering process and assistance with environmental and other standards. Part of modern cement plant operation is the usage of alternative fuels. A TEC’s expertise in this field reaches back to the last two decades, A TEC can offer the complete AF system for nearly any kind of solid and liquid waste materials including material handling, preparation, storage and feeding into the kiln. In addition, A TEC provides the usually necessary modification of the pyroprocessing system of the cement plant for firing alternative fuels, i.e. modification of preheater, calciner and accessory equipment. In total, A TEC has successfully completed more than 450 cement plant optimisation projects, with all the “big players” in the industry, like LafargeHolcim, Buzzi Unicem, Cemex, Italcementi and HeidelbergCement, placing orders regularly on A TEC since many years, even for very large projects.