Photo taken on Nov. 12, 2012 shows a conceptual helicopter model made by the Aviation Industry Corporation of China (AVIC), in Zhuhai, south China's Guangdong Province. The 9th China International Aviation and Aerospace Exhibition kicked off on Tuesday in Zhuhai. As a major exhibitor, AVIC will showcase over 150 products during the 6-day-long airshow. (Xinhua/Yang Guang)

Photo taken on Nov. 12, 2012 shows a conceptual helicopter model made by the Aviation Industry Corporation of China (AVIC), in Zhuhai, south China's Guangdong Province. The 9th China International Aviation and Aerospace Exhibition kicked off on Tuesday in Zhuhai. As a major exhibitor, AVIC will showcase over 150 products during the 6-day-long airshow. (Xinhua/Yang Guang)

Photo taken on Nov. 12, 2012 shows a conceptual helicopter model made by the Aviation Industry Corporation of China (AVIC), in Zhuhai, south China's Guangdong Province. The 9th China International Aviation and Aerospace Exhibition kicked off on Tuesday in Zhuhai. As a major exhibitor, AVIC will showcase over 150 products during the 6-day-long airshow. (Xinhua/Yang Guang)

Photo taken on Nov. 12, 2012 shows a conceptual helicopter model made by the Aviation Industry Corporation of China (AVIC), in Zhuhai, south China's Guangdong Province. The 9th China International Aviation and Aerospace Exhibition kicked off on Tuesday in Zhuhai. As a major exhibitor, AVIC will showcase over 150 products during the 6-day-long airshow. (Xinhua/Yang Guang)