Group 1 - The stock price of Huakang Clean reported at 29.72 yuan on August 14, down by 2.55 yuan, representing a decline of 7.9% [1] - The trading volume on that day was 151,374 hands, with a transaction amount of 442 million yuan [1] - The company operates in the medical services industry, focusing on areas such as assisted reproduction and medical waste treatment [1] Group 2 - Huakang Clean specializes in medical environment purification, providing purification engineering services for hospital clean operating rooms and ICUs [1] - On August 13, the company announced that Chairman Tan Pingtao was placed under investigation by the Guangdong Provincial Supervisory Committee and subjected to detention measures [1] - The company stated that daily operations are managed by the executive team, with General Manager Xie Xinqiang temporarily assuming the role of Chairman, and production operations are normal [1] Group 3 - On August 14, the net outflow of main funds was 21.44 million yuan, with a cumulative net outflow of 48.63 million yuan over the past five trading days [1]