How old is Liu? Director of Dafu technology

Mr. Liu: China nationality, with no right of abode abroad, born in 1943, bachelor degree, professor-level senior engineer, academician of China Academy of Engineering. 1983 to 1994 served as deputy director and director of the institute of data and communication technology of the Ministry of posts and telecommunications; 1994 to 1998 served as deputy director of the general administration of telecommunications of the Ministry of posts and telecommunications and director of the data communication bureau; 1998- 1999 as the president of the postal science and technology planning and research institute of the Ministry of Posts and Telecommunications; 1999-2004 served as the chief engineer and vice president of China Unicom, and since 2004 served as the director of the Science and Technology Committee of China Unicom; Since 2008, he has concurrently served as Dean of School of Information and Communication, Beijing University of Posts and Telecommunications; Since 2009, he has been a member of the National Informationization Expert Advisory Committee and an expert of the National Triple Play Advisory Expert Group. At present, he is also an independent director of Beijing Lanxun Communication Technology Co., Ltd. and Yin Tian Communication Holding Co., Ltd., and was responsible for the design, construction and operation of China public data network, computer internet and high-speed broadband network; Presided over the design, construction and operation of China Unicom's "multi-service unified network platform"; Won the first prize of national scientific and technological progress 1 item, 2 first prizes of ministerial scientific and technological progress, and several national invention patents. From February 20 14 to September 20 18, he served as an independent director of Yintian Communication Holdings Co., Ltd., and resigned as an independent director in September 20 18 due to the change of his position. 20 15 09 19 05 served as the director of Shenzhen Dafu technology co., ltd.