12月31日新股提示：新广益、蘅东光上市。

Group 1 - New company Xinguangyi listed today on the Shenzhen Stock Exchange with a share price of 21.93 yuan and a price-to-earnings ratio of 28.59 [1] - New company Hengtongguang listed today on the Beijing Stock Exchange with a share price of 31.59 yuan and a price-to-earnings ratio of 14.99 [2]