The 19-year-old and Densai ousted Sheng Yuqi of China and Aldila Sutjiadi of Indonesia 7-5 6-1 in the doubles final.
THe top seed Bunyawi earlier toppled Chinese Ma Shuyue 6-1 6-2 to set up the an all Thai singles final showdown with third seeded Nudnida Luangnam who vanqusihed Desai 6-4 6-0.