Shandong twice took the lead through Du Wei (three) and Lu Zheng (18), but Romanian Danalache struck in the seventh and 30th minutes before adding a penalty on the stroke of half-time to give Jiangsu the edge.
However, Simao equalised for the visitors after 58 minutes to earn Shandong a draw which moves them three points clear of the foot of the table.
Jiangsu sit a point behind leaders Guangzhou Evergrande.
Tianjin Taida came from behind to register a 2-1 win at fifth-placed Guangzhou.
The visitors trailed to Ayegbeni Yakubu's 23rd-minute goal, but hit back through Yang Cao (34) and Sjoerd Ars (42).
Dalian Aerbin shared a 1-1 draw with fellow strugglers Shanxi Zhongxin.
Peter Utaka's penalty gave Dalian the lead but Jonas Salley replied eight minutes from time.