The 25-year-old Poom led the second round clubhouse with nine-under-par 63 to take lead in the second round of the BNI Indonesian Masters.
"I was just lucky today, I think I like this course. I won here before two years ago. My putting was very good today," he said.
Poom, who won the 2016 the Indonesian Masters in 2016 compiled a two-day total of 14-under-par 130, lead his fellow Thai golfers Suradit Yongcharoenchai and Jakraphan Premsirigorn who scored a 66 and 65 respectively.
Jakraphan who missed the cut in six straight events before finishing tied-second in Pakistan in October said sharing second place gave him a much needed confidence in the tournament.
"I’m playing on this golf course for the first time and to be able to post a 65 today is a really good achievement," he said.
Former US Open champion Justin Rose from England, whose first round on Thursday was disrupted by a severe thunderstorm, remains six shots back of Poom after he signed for a 68.
Rose was previously only one shot behind his compatriot John Catlin and South Korea's Sungho Lee, who shared the lead at the Asian Tour's season-ending event with opening rounds of 66 on Thursday.
"It was a bit more windy today. Today was tough to make birdies, I wasn't quite on my game," Rose said after the game.
Friday's play was suspended due to fading light at 5.50pm local time, leaving 20 players having to return on Saturday morning to complete their rounds.