The office is ready to offer financial and advisory services to Thai exporters and investors interested in international business expansion, he added.
The official opening ceremony will take place in November.
Thailand is Laos’s second-largest export market, the largest as a source of imports and the second- biggest foreign investor in the country after China.
Major Thai exports to Laos include refined fuel, automobiles and parts, steel and steel products, chemicals, cosmetics and skincare products.
EXIM Thailand’s first overseas representative office was opened in the Myanmar city of Yangon last year.