China's Guangdong province has officially released the Development Plan for Strategic Emerging Industries during the 12th five-year period (2011-2015). China has become the world's largest producer and consumer of vehicles. At the end of 2011, there were more than 100 million cars on the country's roads, and the figure is expected to reach 150 million units by 2020. The requirements for energy efficiency and emission reduction have made it essential to achieve progress for electric vehicles.