TESCAN ORSAY HOLDING is a multinational company established through the merger of the Czech company TESCAN, a leading global supplier of scanning electron microscopes (SEMs) and focused ion beam workstations, and the French company Orsay Physics, a world leader in customized focused ion-beam and electron-beam technology. Over the course of more than twenty-five years of existence, the TESCAN brand has built a formidable reputation for developing and manufacturing scanning electron microscopes and system solutions for micro- and nanotechnology and related applications. TESCAN’s product range meets customers’ requirements at all levels in diverse fields of science and industry such as materials science, life sciences, forensic sciences, earth sciences and the semiconductor and microelectronics industry. Over 2000 SEMs installed in more than 75 countries are a testament to TESCAN’s first-class quality and proven technology. TESCAN’s portfolio includes thermal emission and field emission SEMs. Along with this, TESCAN also produces Ga and Xe plasma source dual beam FIB-SEM systems, dedicated solutions for special applications, a newly developed multimodal holographic microscope, as well as a range of detection systems and tailored solutions for specific analytical needs.