ULAN BATOR, Aug. 20 (Xinhua) -- Mongolia will hold the 8th Coal Mongolia International Conference and Exhibition in Ulan Bator to attract investment in the country's coal industry, organizers said Monday.

With the motto of "together towards technological advancement," the biggest coal trade and investment conference and exhibition of Mongolia will be held on Sept. 4-5 this year.

The annual event aims to attract foreign investment into the Mongolian coal sector, introduce advanced technologies, and strengthen the competitiveness of Mongolia's coal sector in the Asian market.

A total of 3,000 representatives, including 200 officials and investors from about 10 countries including China, Australia, Canada and Britain are expected to participate in the event, the organizers said.

Coal is Mongolia's main export. The country exported 33.3 million tons of coal in 2017, almost 99 percent of which was exported to China, according to the Mongolian Ministry of Mining and Heavy Industry.