One of the major concerns is that China does some of these deals with oppressive regimes such as the Sudan and Zimbabwe. Western diplomats also say that China has "colonial' interests in mind in making such deals.
From this AFP article that we found at Google News, we read the spin from China's Foreign Minister.
"I have noticed that in the international community there are some who do not want to see the development of Sino-African relations and always make an issue of China-Africa energy cooperation," Foreign Minister Yang Jiechi said.
"The fact is that China's oil imports from Africa account for only 13 percent of Africa's total exports, while Europe and the United States account for more than 30 percent," he told reporters.
Speaking at a press briefing on the sidelines of China's annual parliament session, Yang added Chinese investment in the African petroleum industry was just one-sixteenth of the world total, behind US and European investment.
"We support other countries cooperating with Africa on the basis of equality and mutual benefit in the energy sector. There is no reason for them to oppose our equal and mutually beneficial cooperation with Africa," he said.
China has steadily built up trade and economic ties with Africa in recent years, prompting critics in the West to accuse it of taking a "neo-colonialist" attitude toward the continent.