The report, citing the China Petroleum and Chemical Industry Federation, did not provide the year-ago growth rate for the overall sector.

The oil refining sector contributed 2.02 trillion yuan of the total, while the chemical industry contributed 4.2 trillion yuan, up 30.6 percent and 37.1 percent, respectively, according to the federation.

The crude oil sector increased 6.6 percent in the period to 297.44 million tonnes, compared with an annual growth rate of 13.4 percent in the same period last year.

Finished oil output rose 7 percent from a year earlier to 176.56 million tonnes, 3 percentage points slower than the growth rate a year ago, while ethylene products increased 14.6 percent to 10.34 tonnes, 17.1 percentage points slower than the year-ago growth rate, according to the report.