德尔玛今日大宗交易折价成交200万股，成交额1996万元

Group 1 - On September 23, Derma conducted a block trade of 2 million shares, with a total transaction value of 19.96 million yuan, accounting for 25.06% of the total trading volume for the day [1] - The transaction price was 9.98 yuan, which represents a discount of 1.96% compared to the market closing price of 10.18 yuan [1] - The block trade included two transactions: one for 1.5 million shares valued at 14.97 million yuan and another for 500,000 shares valued at 4.99 million yuan [2]