Bloomberg PetroChina Co., the country’s biggest natural gas supplier, will keep its contract prices largely unchanged this year to shield industrial consumers from surging global energy prices due to the Middle East conflict. The firm will retain last year’s upper price limit, a move that’s also designed to support longer-term growth of the domestic gas industry, according to Chinese consultancy, OilChem. Most Read from Bloomberg PetroChina did not immediately respond to calls seeking comment. The wo ...