Since the foundation of FOCUS in 1990 (FOCUS electronics in 2001), a highly educated and motivated team of physicists and engineers in co-operation with external partners ensures that FOCUS and FOCUS electronics products always meet the latest demands of science and the high technology branches in long term. The scientific instruments of the FOCUS product range includes electron beam evaporators, electron energy analyzers, electron spin detectors and a whole family of photo emission electron microscopes as the patented NanoESCA (or Momentum Microscope) , an energy dispersive microscope to image photo electrons. FOCUS scientific instrument products so far have been used mainly for institutional research and development, as well as for quality management. With a sound foundation and initiated by a co-operation with an academic partner as a starting point together with a long experience in the development and construction of electron beam devices, FOCUS and FOCUS electronics have entered the field of electron beam welding in 2007 and have firmly established themselves since then with the micro electron beam welder MEBW-60. Together with the recently introduced micro laser beam welder LaVa this forms today the FOCUS power beam welding branch. FOCUS power beam welding products are used for industrial production, R&D as well as academic research in engineering departments.