Group 1 - The company's stock closed at 10.72 yuan on August 20, down 0.37 yuan, a decrease of 3.34% from the previous trading day [1] - The stock opened at 10.80 yuan, reached a high of 10.95 yuan, and a low of 10.51 yuan, with a trading volume of 523,949 hands and a transaction amount of 559 million yuan [1] - The company operates in the specialized equipment manufacturing industry, focusing on the research, production, and sales of precision air conditioning equipment, primarily used in data centers and communication base stations [1] Group 2 - On August 20, around 9:30 AM, the company's stock experienced a rapid rebound, increasing over 2% within 5 minutes, with a transaction amount of 9.84 million yuan [1] - However, the stock price subsequently fluctuated downward, ultimately closing lower [1] - The net outflow of main funds on that day was 55.35 million yuan, with a cumulative net outflow of 161.59 million yuan over the past five trading days [1]