Municipal authorities of Ulan Bator and Beijing agreed Tuesday to forge a sister-city relationship between the two capitals and further boost bilateral cooperation.

Mayor E. Bat-Uul of Ulan Bator and Vice Mayor Chen Gang of Beijing also inked a cooperation memorandum on boosting economic and business ties between the two sides.

Among other concrete moves they mapped out, an exhibition fair of Mongolian products is to be held in Beijing in September.

The two sides met under the framework of a northeast Asian mayors' forum due to be held here during the coming weekend.