BEIJING (Reuters) – China’s trade surplus with the United States swelled to a record in June as its overall exports remained solid, a result that could further inflame a bitter trade dispute with Washington. The data came after the administration of U.S. President Donald Trump raised the stakes in its trade row with China on Tuesday, saying it would slap 10 percent tariffs on an extra $200 billion worth of Chinese imports, including numerous consumer items. China’s trade surplus with the United States, which is at the center of the tariff tussle, widened to a record monthly high of $28.97 billion, up from $24.58 billion in May, according to Reuters calculations based on official data going back to 2008. Trump, who has demanded Beijing cut the trade surplus, could use the latest result to further ratchet up pressure on China after both sides last week imposed tit-for-tat tariffs on $34 billion of each other’s goods. Washington has warned it may ultimately impose tariffs on more than $500 billion worth of Chinese goods – nearly the total amount of U.S. imports from China last year. The dispute has jolted global financial markets, raising worries a full-scale trade war could derail the world economy. Chinese stocks fell into bear market territory and the yuan currency has skidded, though there have been signs in recent days its central bank is moving to slow the currency’s declines. China’s June exports rose 11.3 percent from a year earlier, China General Administration of Customs reported, beating forecasts for a 10 percent increase according to the latest Reuters poll of 39 analysts, and down from a 12.6 percent gain in May. China’s exports to the United States rose 13.6 percent in the first half of 2018 from a year earlier, while its imports from the U.S. rose 11.8 percent in the same period. Separate data showed Chinese shipments to U.S. ports rose more than expected in June, suggesting some retailers moved up orders to insulate themselves from the intensifying trade war that threatens to send up costs on a growing number of consumer products. Investors fear a prolonged trade battle with the United States could harm business confidence and investment, disrupting global supply chains and harming growth in China and the rest of the world. Separate customs data on Friday showed imports of commodities from soybeans to crude oil eased compared with a year ago, but China’s steel mills and aluminum smelters sold much more abroad spurred by higher international prices amid growing concerns about slowing demand growth.