Following the implementation of stricter US blockade measures, data indicates that China's imports of oil originating from Iran—often rebranded or transshipped through Malaysia—have experienced a notable decline. For years, Iranian oil has frequently entered the Chinese market under the guise of Malaysian origin to circumvent US-led economic sanctions. The recent shift suggests that increased US pressure and monitoring of maritime trade routes have disrupted these illicit supply chains.

While the specific volume of the decline remains subject to ongoing analysis by energy market observers, the trend highlights the vulnerability of these 'shadow' trade networks to geopolitical pressure. Iran International reports that the flow of this oil has effectively 'dried up' in response to the blockade, though the long-term impact on China's overall energy procurement strategy remains to be seen. The situation underscores the ongoing tension between US efforts to isolate Iran's economy and China's continued demand for discounted energy supplies. There is currently no official confirmation from Chinese or Iranian state authorities regarding the exact scale of the reduction, leaving market analysts to rely on shipping data and trade statistics to track the evolving situation.