Factories asked to cut activity before G-20 meet in Hangzhou Activity curbs and last month’s flooding seen reducing demand China is throwing the world’s leaders a party, and oil bulls may be hit with the hangover. Authorities in the Asian nation have ordered hundreds of factories to curb activity ahead of the Group of 20 summit in Hangzhou in early September, in a bid to ensure blue skies when the red carpet is rolled out. The curtailments, along with flooding earlier this summer, may cut petroleum demand in the world’s second-biggest oil consumer by 250,000 barrels a day in the third quarter, according to industry consultant Energy Aspects Ltd. The slowdown at facilities including refineries and petrochemical plants along the Yangtze River threatens to weaken Chinese oil imports that rose to record highs in the first half of the year, at some times exceeding even those of the U.S. […]