The power of the government to shape nascent innovative industries can be seen in the effects of its policies on the wind turbine industry. In 2002 the government launched an open bidding process for wind farm projects to encourage competition among turbine makers. Foreign imports soon flooded China's fledgling market. In a pattern that it would repeat in other industries, the government then required state-owned enterprises to source 70% of their components from domestic firms. Foreign firms continued to invest directly in China, but by 2009 six of the top 10 wind turbine firms were Chinese. This capped off a remarkable growth spurt in domestic firms' share of total sales, from 51% in 2006 to 93% in 2010.