HARBIN -- The 22th China Harbin International Economic and Trade Fair (HTF) concluded Sunday in this capital city of northeast Heilongjiang province with $17.82 billion worth of overseas-related contracts signed.

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Domestic trade and economic cooperation contracts were valued at 221.59 billion yuan ($33.6 billion).

Foreign trade contracts were valued at $9.4 billion, including $2.02 billion worth of contracts for garment exports and $1.05 billion worth for oil imports.

Russia, which borders China's Heilongjiang Province, remained as the most active attendant at the fair. Russian companies and merchants occupied a total of 138 of the fair's 3,000 exhibition booths, an increase of 151 percent over last year's fair.

Two-way trade volume reached about $55.5 billion in 2010, making China Russia's largest trade partner.