Thank you for leaving the computer and the Internet and coming to this party organized by Sohu. There are 300 million Internet users in China. It took more than ten years to reach this number. Now everyone is asking how long it will take for the next 300 million Internet users and who they will be. This is one of the major themes of our meeting today. In 2009, the three major operators have successively opened their own 3G networks. Whether it is TD, CDMA2000 or WCDMA, I have had the privilege of being a friendly user. As an ordinary user, I am enjoying tangible value. The data card services of all three are good, the mobile phones of all three need to be improved, and the 3G applications on the three phones are still relatively poor. This is a bit like the PC Internet in 1995 or 96. Everything has just begun, and major things will happen one after another. As a huge media, Sohu is determined to sing more 3G and more wireless Internet from the beginning of the market, do a good job in promotion and popularization, and do a good job in promotion and service. To this end, we have begun to work. For example, Sohu has launched a 3G channel to provide users and the industry with many innovative content and services such as 3G user and developer communities, independent third-party evaluation labs, 3G maps, and so on. Sohu has delivered excellent Sogou Pinyin input methods on mainstream 3G phones on Symbian and Windows Mobile platforms. In addition, Sohu has accumulated a number of exclusive and high-quality content such as news, NBA, high-definition video, etc., which are constantly being customized and optimized for 3G and mobile phone users. Including Sohu's new "White Society" SNS product, wireless and mobile phone platforms were also considered at the beginning of the design. In the process of serving everyone, we also found some problems. For example, the promotion methods of 3G by operators are relatively primitive and traditional. A large number of users who have demands for 3G mobile phones and applications are creeping on the Internet, and they have not been effectively explored yet. , Ways and emotions have been different from the people of the last era, how to reach them with event marketing and integrated communication to impress them? In addition, how terminal manufacturers, content providers and application developers integrate in the upstream and downstream of the industrial chain, develop personalized products, and carry out targeted marketing to targeted groups. In these respects, Sohu has actively explored and some successful cases, my colleagues will share with you in a while. Ten years ago, every college student who graduated might produce an Internet user; today, every child born will be an Internet user. "Lighting 3G" is to light up the Chinese Internet. "Lighting 3G" is to light up the business of everyone here. Sohu is willing to serve you wholeheartedly. I believe that when we meet again in a few years, everyone may need to leave the computer, but will not leave the network.
Fast Recovery Diode (FRD) is a semiconductor diode with good switching characteristics and short reverse recovery time. It is mainly used in switching power supplies, PWM pulse width modulators, inverters and other electronic circuits as high-frequency rectifier diodes. Free-wheeling or damper diodes are used. The internal structure of the fast recovery diode is different from that of an ordinary PN junction diode. It belongs to a PIN junction diode, that is, a base region I is added between the P-type silicon material and the N-type silicon material to form a PIN silicon wafer. Since the base area is thin and the reverse recovery charge is small, the fast recovery diode has a short reverse recovery time, a low forward voltage drop, and a high reverse breakdown voltage (withstanding voltage).
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Fang Gang, Vice President of Sohu 