91成人短视频

Klaus N枚lker, PhD, graduated from Ruhr Univ. in Bochum, Germany, in 1994 with a Master of Science in mechanical engineering. He received his PhD in process engineering in 1998. He joined thyssenkrupp Uhde the same year and worked in engineering, research and development (R&D), and commissioning of ammonia plants. Later, he became head of the ammonia process group. Since 2009, he leads the process team in Uhde鈥檚 fertilizer division, which includes ammonia technology.