禾信仪器龙虎榜：营业部净买入3352.66万元

Group 1 - The stock of HeXin Instruments (688622) closed at 96.02 yuan on July 29, reaching the daily limit with a trading volume of 2.58 billion yuan and a turnover rate of 4.05% [2] - The stock was listed on the daily trading list due to a price increase of 15% at the close [2] - The top five trading departments accounted for a total transaction amount of 1.28 billion yuan, with a net buying amount of 335.27 million yuan [2][3] Group 2 - The main capital inflow for the stock was 9.68 million yuan for the day [3] - The largest buying department was the Shanghai-Hong Kong Stock Connect, with a buying amount of 26.99 million yuan, while the largest selling department was also the Shanghai-Hong Kong Stock Connect, with a selling amount of 11.35 million yuan [3] - Specific buying and selling amounts from various departments were detailed, indicating significant institutional interest [3]