ZSK extruder control retrofit increases productivity and efficiency Coperion has successfully modernized the entire control system of a ZSK production extruder at Tetra, the leading manufacturer worldwide of fish food and water conditioners, within just a few weeks' time. The ZSK extruder, which has been operating at high capacity for over 30 years, producing various types of fish food pellets, has been upgraded with a new control unit and main drive. This retrofit updates the entire … [Read more...] about ZSK extruder at Tetra: Control system upgrade in record time