On 9 March, OFAC added Yun Xia YUAN and a large number of entities. The listings include a network of 5 companies and one individual for supporting Iran’s UAV procurement efforts. They also include 39 entities constituting a significant “shadow banking” network, one of several multi-jurisdictional illicit finance systems which grant sanctioned Iranian entities, such as Persian Gulf Petrochemical Industry Commercial Co. (PGPICC) and Triliance Petrochemical Co. Ltd. (Triliance), access to the international financial system and obfuscate their trade with foreign customers. Iranian exchange houses create front companies abroad to enable trade on behalf of their Iranian clients, with foreign currency transactions maintained via internal ledgers.
https://home.treasury.gov/policy-issues/financial-sanctions/recent-actions/20230309
https://home.treasury.gov/news/press-releases/jy1330
https://home.treasury.gov/policy-issues/financial-sanctions/recent-actions/20230309