What is happening at the moment is that China is converting itself from an agricultural peasant economy to an industrial economy, and is achieving heady levels of growth. This acts as a stimulus to the world economy, and gives developed economies access to a cheap source of goods. On the other hand it is leading to escalating prices of basic commodities, eg steel, as China sucks in more and more supplies, and this leads to incresed costs elsewhere. Every silver lining has its cloud.