File photo shows an Iranian oil tanker.
China has increased its oil imports from Iran following the settlement of ambiguities by the two countries regarding the terms of the existing crude sale agreements.
Customs data indicated that China added 133,902 barrels per day to its crude shipments from Iran in May, increasing its Iranian oil purchase by 34.5 percent from the level of 388,034 barrels per day in April, Reuters reported on Thursday.
The rise in China's crude shipments from Iran was aimed at offsetting a plunge in the oil imports in the first quarter of 2012.
The West’s unilateral sanctions against Tehran’s nuclear energy program have heightened concerns among the oil importers over imminent crises in the global crude market.
In an attempt to allay such concerns, the US has made exemptions for 18 nations, including 10 European Union countries, Japan, India, South Korea, Sri Lanka, Malaysia, Taiwan, Turkey, and South Africa, from sanctions on the Iranian crude oil.
The United States and the European Union have imposed tough sanctions against Iran since the beginning of 2012, claiming that the country's nuclear energy program includes a military component.
Tehran refutes such allegations, noting that frequent inspections by the International Atomic Energy Agency have never found any diversion in Iran's nuclear energy program toward military purposes.