** HK shares of Jiangsu Lopal Tech 2465.HK fall 4.9% to HK$6.27; set for biggest one-day pct decline since May 22

** Shanghai-listed stock 603906.SS falls 5.5% to 13.16 yuan

** Both stocks on track to snap two straight days of rise

** Chinese automotive specialty chemical products maker plans sale of 20 mln new H-shares in share placement to raise HK$120 mln ($15.3 mln) to transform coolant production line, repay debts and for working capital

** New shares at HK$6 are 9% discount to Wednesday's close of HK$6.59

** YTD, both HK and Shanghai stocks gain 34.5%

($1 = HK$7.8454)

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))