港股CRO概念股普跌，康龙化成跌超4%

Group 1 - The Hong Kong stock market saw a decline in CRO (Contract Research Organization) concept stocks, with notable drops in several companies [1] - Zhaoyan New Drug fell over 7%, while Kanglong Chemical and King’s Ray dropped over 4% [1] - Kylin and Weiya Bio experienced declines of over 2% [1]