The Trump administration on Friday announced fresh sanctions against Iran, targeting the country's largest petrochemical company for giving financial support to the Revolutionary Guard Corps.

The Treasury Department imposed sanctions on the Persian Gulf Petrochemical Industries Co. and 39 of its subsidiaries, stating that the company provides contracts to the financial arm of the Islamic Revolutionary Guard Corps (IRGC), a branch of Iran's armed forces.

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The administration said the petrochemical company and its subsidiaries are responsible for 40 percent of Iran's petrochemical production capacity and 50 percent of the country's petrochemical exports.

Treasury Secretary Steven Mnuchin Steven Terner MnuchinHillicon Valley: DOJ proposes tech liability shield reform to Congress | Treasury sanctions individuals, groups tied to Russian malign influence activities | House Republican introduces bill to set standards for self-driving cars Treasury: Trump's payroll tax deferral won't hurt Social Security Treasury sanctions individuals, groups tied to Russian malign influence activities MORE said in a statement that sanctions against the petrochemical company would undermine the Revolutionary Guard Corps.

"This action is a warning that we will continue to target holding groups and companies in the petrochemical sector and elsewhere that provide financial lifelines to the IRGC," Mnuchin said.

The administration in April labeled the Revolutionary Guard a "foreign terrorist organization," the first time the United States has applied the designation to an entire government entity.

President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE and his advisers have taken a hard-line against Iran since withdrawing from the Obama-era Iran nuclear deal. The administration has reimposed sanctions on Tehran's financial institutions and oil industry, and additionally targeted its metals industry and the Revolutionary Guard.

Trump asserted on Thursday during a meeting with French President Emmanuel Macron Emmanuel Jean-Michel MacronNavalny released from hospital after suspected poisoning US-China tensions shadow United Nations meeting The US is missing an opportunity in Lebanon MORE that the sanctions imposed by the U.S. have crippled Iran.

"They’re doing very poorly as a nation," Trump said. "They’re failing as a nation. And I don't want them to fail as a nation. We can turn that around very quickly, but the sanctions have been extraordinary how powerful they’ve been, and other things. I understand they want to talk and if they want to talk that’s fine."

Iranian leaders have given no indication they are open to negotiations with U.S. officials, and the two countries have no official diplomatic channels.

The Trump administration announced last month it will deploy 1,500 troops to the region, further escalating tensions.