海南自贸区板块盘初走低，康芝药业一度跌超7%

Group 1 - The Hainan Free Trade Zone sector experienced a decline at the beginning of trading, with Kangzhi Pharmaceutical dropping over 7% [1] - Haide Co. saw a decline of more than 6%, while Hainan Haiyao, Hainan Ruize, and Luoniushan also followed suit with declines [1]