FEI, an American high-tech company, is an innovator and leading solution provider in the field of nanotechnology in the world, and is a "tool of nanotechnology". Its products are mainly oriented to the fields of semiconductors, data storage, structural biology, materials and industry. For Fei's transmission electron microscope history, we should look at it from several key time points. 197 10 Fei company was established in 197 1 year. It seems that it is much later than JEOL, but the history of making transmission electron microscope by Fei did not start from 197 1 year. We should know that the American company Feifei didn't do transmission electron microscopy at first, but only devoted itself to providing high-purity and single-oriented crystals as field emission materials at first. The 1997 incident took place on 1997, when Hong Kong returned to China. This year, in addition to this big event, a small thing happened: Fei and Philips Electronics Group of the Netherlands () announced the merger of their global business, and Philips Electronics Group became the largest shareholder of Fei. From this, Fei began the road of electron microscope industry leader. 1949 is of great significance in the commercialization history of transmission electron microscopy. This year, Philips Electronic Optics Company launched the world's first commercial transmission electron microscope "EM 100". You know, JEOL's first JEM- 1 was also launched at 1949. It can be said that Philips electronic optics has always been one of the recognized leaders in the electron microscope industry. In 2009, Flying Company recently released the second generation spherical aberration correction electron microscope Titan G2 60-300 transmission electron microscope, which is a revolutionary product of Titan series electron microscope. Flying Titan series products are flying star series, which have been launched since 2005, including Titan G2 60-300, Titan 3G G2 60-300, Titan Krios and Titan ETEM (Environmental Transmission Electron Microscope). This series of products has achieved great commercial success with its breakthrough, stability and excellent performance. The STEM resolution of Titan G2 60-300 can reach 0.08nm, and that of Titan 3G G2 60-300 can reach 0.07nm. It is the only transmission electron microscope in the world that can achieve both sub-angstrom resolution and S-TWIN, and it is also the only transmission electron microscope in the world that can correct the spherical aberration of 300kV Cs. In China, the popularity of this series of electron microscopes is also quite high. Tsinghua University, Zhejiang University, Institute of Metals, Chinese Academy of Sciences, Chongqing University, Xi Jiaotong University, Central South University, Southeast University, Shenzhen University, Guangxi University and other research institutes and universities are all equipped with this series of spherical aberration correction transmission electron microscope. With the further development of domestic science and technology, it is believed that more and more mirrors will take root and blossom in this land.