YIWU, CHINA – NOVEMBER 26: Foreign clients select festive goods at China Yiwu International Trade City on November 26, 2024 in Yiwu, Zhejiang Province of China. Hu Xiao/VCG via Getty ImagesFor years, Christmas merchandise has been hitting the U.S. shelves earlier, as retailers try to capitalize on the lucrative holiday season — a retail phenomenon known as “Christmas creep.”However, tariffs could be the Grinch that disrupts year-end festivities, as Chinese factories and their U.S. buyers navigate tariff uncertainties to ensure that shelves stateside will be well-stocked in time for Christmas.Shortly after U.S. President Donald Trump unveiled sweeping tariffs on April 2 — including a 34% tariff on imports from China that were later ramped up to 145% — many U.S. retailers reacted by halting their orders from Chinese suppliers, forcing factories to pause production, according to CNBC interviews.However, industry representatives say that some production has restarted in the last few days, as concerns about business disruptions and missed opportunities outweigh the tariff uncertainties.”If you don’t start producing in the next couple of weeks, you’re going to start missing Black Friday and Christmas,” Cameron Johnson, Shanghai-based senior partner at consulting firm Tidalwave Solutions, said in a phone interview Tuesday.”Both sides are trying to be flexible to some degree,” he said. “Retailers are starting to realize if these supply chains stop, it will be much more difficult to get them up and running [again].”Johnson described how, for example, a pause in orders for a factory making spoons would impact the company that rolls the steel, as well as the iron ore smelter. “These supply chains themselves, the upstream, are also starting to close down. If they close down, even if we have some kind of a deal, it will take time for things to [restart].”Despite some rerouting of China-made goods through other countries, replacing existing …