Beijing's surprise increase in diesel prices will make truckers grumble, but for the first time in weeks they may be able to fill up without rationing or queues, and the easier supply of oil will likely bolster consumption.

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The government said on Thursday it would raise low state-set caps on fuel pump prices by around 1,000 yuan a tonne, or nearly 20 percent, the first rise for nearly eight months and the steepest one-off hike ever.