Data from the commodity intelligence firm Kpler, seen by Iran International, show that in 2025 Iran delivered an average of 1.38 million barrels per day (bpd) of crude oil and gas condensate to China—a decline of just 7 percent compared with 2024.
After Iranian oil exports to Syria halted in December 2024, China effectively remained Tehran’s sole buyer of crude oil over the past year.
Unlike crude oil, Iran’s petroleum product exports—fuel oil (mazut), naphtha and liquefied petroleum gas (LPG)—are relatively diversified, with shipments mainly destined for China, the United Arab Emirates, Malaysia and Singapore.
According to Kpler, Iran exported an average of 190,000 bpd of naphtha and 256,000 bpd of fuel oil last year, a combined decline of about 13 percent compared with 2024.
The drop, however, was driven not by tighter US sanctions but by Iran’s worsening domestic gas shortages, which forced power plants and industrial facilities to burn more fuel oil, reducing volumes available for export.