US Sanctions 40 Shipping Companies and Chinese Refinery Over Iranian Oil Trade

The United States has accused a major Chinese oil refinery and approximately 40 shipping companies of facilitating the transportation and trade of Iranian oil. This strategic move by the Trump administration is designed to enhance the effectiveness of stringent sanctions aimed at halting Iran's nuclear program and its regional activities, while as China remains the largest purchaser of Iranian oil, these sanctions are expected to escalate tensions in US-China relations and impact global oil supplies.

Crackdown on the Iranian Oil Network

The Trump administration is imposing economic sanctions on a large oil refinery in China and nearly 40 shipping companies and tankers involved in the transport of Iranian oil. The announcement was made on Friday, with initial confirmation provided by an Associated Press report. The US administration had previously issued warnings that any entity engaging in trade with Iran would face severe consequences. This action is part of a broader campaign by the Republican administration to completely shut down Iran's primary source of income—its oil exports. On top of that, the US has implemented a physical blockade this month at the Strait of Hormuz, a critical waterway in the Persian Gulf essential for global energy supplies. These sanctions come just weeks before a scheduled meeting between President Donald Trump and Chinese President Xi Jinping in China.

Hengli Petrochemical and Military Funding Allegations

The sanctions announced on Friday specifically target the Hengli Petrochemical refinery located in the port city of Dalian. This refinery possesses the capacity to process approximately 400,000 barrels of crude oil per day, making it one of China's largest independent refineries. According to the Treasury Department, Hengli has been receiving shipments of Iranian crude oil since 2023, which has reportedly generated hundreds of millions of dollars for the Iranian military. The advocacy group 'United Against Nuclear Iran' stated in February 2025 that Hengli is among dozens of Chinese buyers purchasing Iranian oil. Treasury Secretary Scott Bessent stated on Friday that his department will continue to tighten the grip on the network of vessels, intermediaries, and buyers that Iran relies on to bring its oil to global markets.

Warnings to International Financial Institutions

Earlier this month, Bessent's department dispatched letters to financial institutions in China, Hong Kong, the UAE, and Oman. These letters threatened the imposition of secondary sanctions for conducting business with Iran, accusing these nations of allowing illegal Iranian activities to persist through their financial systems. During a White House press briefing on April 15, Bessent emphasized that the administration has clearly communicated to these countries that if they purchase Iranian oil or if Iranian funds are deposited in their banks, the US is prepared to impose secondary sanctions. He described this as a very stern measure intended to enforce compliance.

Global Energy Volatility and Temporary Exemptions

These sanctions are being implemented at a time when the global energy trade is experiencing significant turmoil, while ongoing conflicts around the Persian Gulf are disrupting the supply of oil and natural gas, causing prices to surge. To mitigate the impact of rising oil prices, the Treasury Department has provided temporary exemptions for Russian oil and a one-time exemption for Iranian oil that's already at sea, while earlier this month, the US sanctioned another Chinese refinery for similar allegations. In response, Liu Pengyu, a spokesperson for the Chinese Embassy in Washington, stated that the use of sanctions undermines the international trade order and rules, obstructs normal economic transactions, and violates the legitimate rights and interests of Chinese companies and individuals.