Group 1 - The medical device sector experienced a decline of 1.78% on September 2, with Jimin Health leading the losses [1] - The Shanghai Composite Index closed at 3858.13, down 0.45%, while the Shenzhen Component Index closed at 12553.84, down 2.14% [1] - Notable gainers in the medical device sector included Wende Biological, which rose by 7.61% to a closing price of 25.58, and Jinhao Medical, which increased by 6.66% to 29.48 [1] Group 2 - Jimin Health saw a significant drop of 10.02%, closing at 11.40, with a trading volume of 1.0859 million shares and a transaction value of 1.331 billion [2] - Other notable decliners included Rejing Biological, which fell by 8.72% to 186.79, and Yikang Haosheng, which decreased by 7.71% to 34.24 [2] - The medical device sector experienced a net outflow of 1.23 billion from major funds, while retail investors contributed a net inflow of 1.011 billion [2]