China’s crude oil imports from top supplier Saudi Arabia rose 8.8 percent in March from a year earlier, driven by strong demand and as shipments delayed due to a port congestion finally arrived, Report informs referring to Reuters.

Imports from the United Arab Emirates also rose again, up 86 percent, as some Iranian barrels were believed to have slipped in.

Shipments from Saudi Arabia were 7.84 million tons, equivalent to 1.85 million barrels per day (bpd), data issued by China’s General Administration of Customs showed on Tuesday, versus 1.7 million bpd a year earlier. The imports, however, slowed from 1.94 million bpd in February.

Saudi Arabia retained its position as China’s biggest crude oil supplier for a seventh consecutive month.

Ports at China’s oil refining hub Shandong experienced congestion for a few weeks in February, slowing oil arrivals.

China’s crude oil imports from Russia rose 6 percent in March to 1.75 million bpd from a year ago, but slipped from 1.91 million bpd in February.

Analysts from Refinitiv expect arrivals from Saudi Arabia to further drop in April given a voluntary supply cut of 1 million bpd by the producer and increasing prices of Arab light crude for the Asian market.

Appetite of spot oil would turn to more price competitive African sources, with China’s imports from Angola at 0.74 million bpd in March, edged up from 0.73 mln bpd a month ago.

The customs data also showed that crude oil supplies from Kuwait increased to 0.6 million bpd, up 29 percent from a year earlier.

China’s imports from the UAE were at 0.71 million bpd last month, up 86 percent on year. Shipments from Oman rose 60 percent from a year ago to 0.86 million bpd.

Reuters reported that Iran has “indirectly” moved record volumes of oil into China in recent months, marked as supplies from Oman, the UAE and Malaysia. Most of the oil ended up in east China’s Shandong province – a hub for the country’s independent refineries.