Gelonghui, January 26 | CRO concept stocks weakened. Kanglong Chemical (3759.HK) in the Hong Kong stock market rose 0.8% at the beginning of the session, reaching a record high of HK$179.4. After that, Kanglong Chemical (3759.HK) fell 7.25%, Tiger Pharmaceuticals (03347.HK) fell about 5%; in the A-share market, Kanglong Chemical (002370.SZ) fell 7.2%. Kanglong Chemical announced yesterday that the net profit for the year ended December 31 last year is expected to be about 1,133 million to 1,187 million yuan, an increase of 1.07-1.17 times over the previous year, with a profit of 1.4325-1.5017 yuan per share, while net profit after deducting non-recurring profit and loss is about 778 million to 828 million yuan, an increase of 54%-64% year on year.