NAY PYI TAW, May 10 (Xinhua) — Thai Foreign Minister Don Pramudwinai, serving as a special envoy of Thai Prime Minister Payut Chan-o-cha, completed his visit to Myanmar on Monday, the first by a Thai top diplomat after Myanmar's new government took office.

The two countries vowed to further the cooperation in bilateral relations and promotion of sector-wide development during Pramudwinai's talks with his Myanmar counterpart Aung San Suu Kyi.

Their talks focused on border areas development, treatment of Myanmar workers in Thailand and the Dawei Special Economic Zone project.

Suu Kyi said there are many sectors for win-win cooperation between the two countries, adding that the two countries can overcome challenges of "sufficiency economy" through bilateral cooperation, referring to the theory or moderation championed by the current King of Thailand.

Pramudwinai pledged to boost Thailand's cooperation with Myanmar and ASEAN and the Greater Mekong Subregion countries as well.

With regard to Myanmar migrant workers in Thailand, Pramudwinai said there are 1.59 million registered Myanmar migrant workers in Thailand, whose children are provided with education and healthcare services, pledging to boost the rights of the workers as much as they can.

Concerning the Dawei deep seaport, he said there has been some progress with the project, believing that bilateral cooperation between Myanmar, Thailand and Japan will bring success to the project.

On Myanmar's migrant workers, Suu Kyi said Thailand alone would not be held accountable for the issue and that Myanmar would also arrange for them to be repatriated and work at home.

Myanmar President U Htin Kyaw, when meeting Pramudwinai, said the two countries will enjoy stronger economic and trade relations following the completion of the Myanmar-Thailand Friendship Bridge at Myawaddy.

Pramudwinai said Thailand hopes to hold talks on bilateral cooperation during the upcoming Russia-ASEAN Summit, inviting Myanmar President to visit the kingdom.

Thailand is a key trade partner of Myanmar with bilateral trade of about 4.5 billion U.S. dollars in 2015-16, according to the Ministry of Commerce.

Statistics also show that Thailand's investment in Myanmar amounted to 10.5 billion U.S.dollars as of March 2016, accounting for 16.48 percent of the total and the third in Myanmar's foreign investment line-up after China and Singapore since Myanmar opened its door in late 1988.

Myanmar and Thailand established diplomatic relations in 1948 when Myanmar regained independence.