BEIJING, July 21 (Reuters) - China imported 6.67 million tonnes of coal from Australia in June, up 36 percent on the month as domestic supplies dwindled and seasonal demand from power plants improved, data from the country's customs authority showed on Tuesday.
The volume was still down 14.6 percent from year-ago levels, hit by stricter quality inspections at China's ports and as demand remained weak compared with last year.
According to data from China's General Administration of Customs on Tuesday, North Korea overtook Indonesia to become the second biggest coal exporter to China in June, with volumes rising 42.8 pct on the year to 2 million tonnes.
Imports from Indonesia fell 49.8 percent on the year to 1.88 million tonnes in June.