PetroChina Co, the nation's largest oil company, will increase oil processing and shorten maintenance of its plants to ease a fuel shortage in some regions, the Bloomberg News reported. 

The refiner will raise processing volumes by 15 percent this month from a year earlier and oil-product output by 19 percent, according to China News Service's report on March 6. The report didn't give exact volumes. Gasoline and diesel yields will rise 2.4 percent, it added.

PetroChina will run its refining units at more than 98.5 percent of designed capacity, the report said.

The country's domestic fuel supplies have fallen after some private refineries cut processing because of higher crude costs.

China raised gasoline and diesel prices by 5.8 percent on Thursday after crude oil prices increased to the highest in more than two years, the report said.