Second seed Chou prevailed in three games, 21-11, 13-21, 21-19, against the top-seeded Thai to claim the Super 500 title – his first since Vantaa 2024, reports the Bangkok Post.
It was Kunlavut’s third straight defeat against Chou this year. He also lost to the Taiwanese star at the Indonesia Open and the China Open.
Earlier, world No.1 pair Jiang Zhenbang and Wei Yaxin defeated two-time defending champions Feng Yanzhe and Huang Dongping 21-19, 24-22 to take the mixed doubles title.
Sunday’s final was the third consecutive year the two pairs fought for the title.
Feng and Huang dispatched Thai duo Dechapol Puavaranukroh and Supissara Paewsampran in the semi-finals.
In the women’s doubles final, Malaysia’s Pearly Tan and Thinaah Muralitharan defeated Japan’s Rin Iwanaga and Kie Nakanishi 21-7, 21-9.
The victory ended a run of three consecutive final losses for the Malaysians.