Lying tied-10th at the midway stage of the event, Gangjee was four shots behind the leading trio of Chinese Taipei's young guns Hung Chien-yao and Lee Chieh-po and South Africa's Jbe Kruger.
The next best Indian was SSP Chawrasia (70-70), who played a second successive round of two-under 70 and he was tied-25th.
Another Indian making a good move on second day was young S Chikkarangappa, who after first round 74 was in danger of missing the cut. He hauled himself up with a fine 67 that included four birdies in a row from 15th to 18th after starting from the 10th.
Shiv Kapur had a bogey free 69 that made up for his first round 73 and he moved to tied-33rd.
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Indians who missed the cut were Khalin Joshi (73-72), Gaganjeet Bhullar (75-71), Jeev Milkha Singh (75-74), Kapil Kumar (71-78), Himmat Rai (77-73), Rashid Khan, who retired midway through the round, and Manav Jaini, who withdrew after first round.
Gangjee, who carded even par 72 in the first round, is now looking at the closing stretch in the season for success that could turn his modest season into a good one.
Meanwhile, power-packed Kruger produced the day's best card of seven-under-par 65 to join Hung and Lee atop the leaderboard on 10-under-par 134.
Hung, 23, shot a bogey-free 67 while 21-year-old Lee was one shot better after sinking an eagle and five birdies.