上海汽配今日大宗交易折价成交40万股，成交额646万元

Group 1 - The core transaction on August 20 involved Shanghai Auto Parts, with a total of 400,000 shares traded, amounting to 6.46 million yuan, which represented 2.66% of the total trading volume for that day [1] - The transaction price was 16.15 yuan per share, reflecting a discount of 3% compared to the market closing price of 16.65 yuan [1] - The buying brokerage was Huafu Securities, while the selling brokerage was Industrial Securities [2]