** Shares of Chinese pharmaceutical products developer SSY Group 2005.HK drop 10.3% to HK$2.71, their lowest level since June 30, and on course for a second session of fall
** Stock on track for biggest one-day pct decline since April 7
** SSY estimates its 2025 net profit to drop 45%-60% y/y from HK$1.06 bln ($135.66 mln) profit in 2024
** Says drop is due to decline in sales volume of medicines, control of medical insurance cost throughout 2025, and price pressure amid industry competition, among others
** YTD, stock down 1.1%, while the benchmark Hang Seng Index .HSI up 3.4%
($1 = 7.8137 Hong Kong dollars)
(Reporting by Donny Kwok)
((donny.kwok@thomsonreuters.com))