化学制药板块1月28日跌0.72%，必贝特领跌，主力资金净流出17.4亿元

Group 1 - The chemical pharmaceutical sector experienced a decline of 0.72% on January 28, with Bibete leading the drop [1] - The Shanghai Composite Index closed at 4151.24, up 0.27%, while the Shenzhen Component Index closed at 14342.9, up 0.09% [1] - Notable gainers in the chemical pharmaceutical sector included Guangshengtang, which rose by 14.00% to a closing price of 105.01, and Xinnowei, which increased by 12.90% to 46.21 [1] Group 2 - Bibete saw a significant decline of 13.61%, closing at 46.26, with a trading volume of 103,400 shares and a transaction value of 4.92 million [2] - The sector experienced a net outflow of 1.74 billion in main funds, while retail investors saw a net inflow of 1.274 billion [2] - The top stocks by main fund inflow included Guangshengtang with 1.65 billion and Xinnowei with 79.25 million [3]