The listing board of German Nano is: A shares of GEM of Shenzhen Stock Exchange, and the listed exchange is Shenzhen Stock Exchange. Its listing time is 20 19-04- 15, and its establishment time is 2007-0 1-25, which belongs to the science and technology innovation board.
Science and technology innovation board, referred to as science and technology innovation board, is a newly established stock board in Shanghai Stock Exchange.