Angola was the second-biggest supplier of oil to the Mainland last month, Bloomberg reports.

The news agency, citing data obtained from the Chinese General Administration of Customs, says 4.67 million tons of oil was imported from Angola last month, 43 percent more than the month before.

The report says Russia was the main source of Chinese imports of oil last month.

China imported oil last month at the fastest rate ever – 9.21 million barrels a day, an 11 percent increase on the previous month, Bloomberg says.