He was speaking in his capacity as chairman of the Myanmar-Thailand joint high-level committee for development of the Dawei SEZ and related projects.
He added that Thailand has placed importance on the project.
He said the government would also hasten to hold a meeting between the three involved parties -- Thailand, Myanmar and Japan -- on how to proceed next.
The meeting will also discuss Myanmar's cancellation of contracts with the Italian-Thai Development Company and partners to develop the project's first phase.
Supattanapong said the Thai government has still maintained a loan of Bt4.5 billion earmarked for Myanmar to build a road connecting the border of Kanchanaburi province and Dawei.