恒工精密今日大宗交易折价成交2.8万股，成交额203.36万元

Group 1 - The core point of the news is that Henggong Precision conducted a block trade on October 28, with a total of 28,000 shares traded at a price of 72.63 yuan, which represents a 10% discount compared to the market closing price of 80.7 yuan [1][2]. Group 2 - The total transaction amount for the block trade was 2.0336 million yuan, accounting for 1.75% of the total trading volume on that day [1][2]. - The buyer of the shares was CITIC Securities Co., Ltd., while the seller was Guotou Securities Co., Ltd. [2].