China orders companies to ignore U.S. sanctions on domestic refiners buying Iranian oil

China has issued a rare directive ordering its companies to ignore U.S. sanctions on five domestic refiners accused of buying Iranian oil, marking an unprecedented act of defiance that could ensnare global banks in the escalating trade showdown between the world's two largest economies. Beijing's commerce ministry invoked a "blocking order" introduced in 2021, explicitly banning the recognition, enforcement, or compliance with these U.S. measures, which it deems unjustified restrictions on normal trade with third countries.^[1][2]

The targeted refiners include Hengli Petrochemical (Dalian) Refinery Co., sanctioned by Washington last month, along with privately owned processors such as Shandong Jincheng Petrochemical Group, Shandong Shouguang Luqing Petrochemical, Shandong Shengxing Chemical, and Hebei Xinhai Chemical Group.^[1][4] These firms, many operating as independent "teapot" refineries in eastern China, have faced U.S. asset freezes and transaction bans for purchasing discounted Iranian crude, a key resource amid heightened tensions in West Asia.^[3][4] As reported by Bloomberg, this move threatens to trap a vast banking sector in the crossfire, as financial institutions grapple with conflicting legal obligations from Beijing and Washington.^[1]

China's commerce ministry stated on Saturday that the U.S. sanctions breach international norms and unlawfully interfere with trade, prompting the first-ever deployment of the 2021 blocking measure designed to shield domestic firms from foreign laws.^[2][3] This escalation follows Washington's recent sanctions on additional Chinese entities, including Qingdao Haiye Oil Terminal, accused of importing tens of millions of barrels of Iranian oil and generating billions in revenue for Tehran—though that firm was not covered in Beijing's injunction.^[4]

The standoff underscores deepening frictions over Iran's oil trade, where China remains a major buyer reliant on these refiners to process discounted crude despite U.S. efforts to isolate Tehran economically.^[3] Companies worldwide now face a dilemma: comply with U.S. penalties at the risk of Chinese retaliation, or defy them and invite American enforcement, potentially disrupting cross-border payments and lending.^[1]

This rare public clash could ripple through global energy markets and finance, affecting refiners, banks, and traders who depend on stable U.S.-China relations. While Beijing frames its order as a defense of sovereignty, Washington has ramped up pressure on Iran-linked networks, signaling no immediate retreat.^[2][4] What happens next remains unclear, but experts warn of prolonged uncertainty as both powers test each other's resolve in this high-stakes economic confrontation.