The Baker Hughes Celle Technology Center (CTC) in Celle, Germany, is dedicated to research, engineering and testing of drilling systems, telemetry and logging-while-drilling (LWD) tools. Core competencies include mechanical and electronic product development and manufacturing technology, modeling and solutions for drilling dynamics solutions and sensor technology for drilling and evaluation. The CTC was recently expanded to support joint technology developments with operators and local universities. The expansion includes research and development testing capabilities for drilling and production technology for the geothermal industry in Germany and around the world. In 1957, Christensen Diamond Products opened its manufacturing plant in Celle. The facility built diamond core heads and drill bits and soon began producing stabilizers, drilling jars and other equipment. In 1977, the Celle engineering and manufacturing team introduced the Navi-Drill™ line of downhole drilling motors, which led the drilling industry in performance and reliability. Other innovations developed in Celle include the industry's first steerable motor system, and the AutoTrak™ Rotary Closed Loop System.