China maintains a defense relationship with Sudan, despite the UN arms embargo that has been in place for Darfur since 2005. The Security Council imposed an embargo on all nongovernmental forces operating in Darfur in July 2004, and expanded it to include government forces as well in 2005. Sales to Khartoum are still permitted, although a UN panel, which visited Sudan in August 2005 to investigate violations of the embargo, recommended in April 2006 that the Security Council expand the embargo to the entire country.
Information about recent Chinese arms sales to Sudan is difficult to discern both because of China's secrecy and because of the inherent difficulty of tracking the flow of small arms, which are below most international reporting thresholds. The UN Panel of Experts reported spotting Chinese-made military trucks in the Port of Sudan that appeared similar to those used on Sudanese Army bases in Darfur. Non-governmental organizations have reported that small arms used by rebels, janjaweed, and government forces in Darfur are of Chinese origin. There are also reports that Khartoum supplied Chinese-made automatic grenade launchers to the United Front for Democratic Change, a Chadian rebel group that also operates out of bases in Darfur. Russia and France are also suppliers of arms and military equipment to Sudan. In the last six years, Russia reported to the United Nations deliveries of 33 attack helicopters to Khartoum, eight combat aircraft, and 30 armored combat. (Between 2001 and 2004, France exported over $1 million of mostly small arms, spare parts, and ammunition.)
Beijing defends its sales to Khartoum as legal, and says that it requires all of its buyers not to transfer arms to other parties, including guerilla groups, a claim which is difficult to confirm independently. Zhai Jun, China's Assistant Minister of Foreign Affairs, said in March 2007, "With Sudan, we have cooperation in many aspects, including military cooperation. In this, we have nothing to hide."
In early April, China received Sudan's Joint Chief of Staff. The Chinese Minister of Defense told his Sudanese counterpart that China was "willing to further develop cooperation between the two militaries in every sphere."
Feinstein isn't offering up anything new or salacious in this short piece, but it's a decent outline of the economic, political and military relationship between Sudan and China.
For more on China and Sudan, see the tireless and laudable Eric Reeves.