Some believe that the GMO technology and seeds in China are provided by Monsanto, an American company that has been actively participated in China's agriculture development for decades. Monsanto has a monopoly in GMO food business worldwide. 

News about a recent lawsuit between 270,000 organic farmers and Monsanto:
http://thewatchers.adorraeli.com/2011/04/05/organic-farmers-sue-monsanto-over-gmo-seeds/