According to Beijing’s government, the total transaction value of e-commerce in Beijing, one of biggest cities in China, grew by 45% to 550 billion RMB in 2012. Beijing’s e-commerce market is characterized by its high transaction volume, which has prompted half of China's top 10 e-commerce companies set up headquarters in Beijing in often in one of the two national e-commerce industry zones which attract a great number of small and medium e-commerce firms. Beijing’s government expects that its e-commerce transaction value will grow at 22% CAGR and hit 1 trillion RMB in 2015, which will account for 60% of Beijing’s GDP.