![Construction workers build a new elevated road in Zhengzhou City, Central China\'s Henan Province. An innovative technology using prefabricated materials has ensured faster construction that is also energy-saving and environmentally friendly. (Photo: China News Service/Yang Lei)](http://www.ecns.cn/hd/2019/04/25/46aca34ace85429f85799b0294eb7bfd.jpg)
Construction workers build a new elevated road in Zhengzhou City, Central China's Henan Province. An innovative technology using prefabricated materials has ensured faster construction that is also energy-saving and environmentally friendly. (Photo: China News Service/Yang Lei)
![Construction workers build a new elevated road in Zhengzhou City, Central China\'s Henan Province. An innovative technology using prefabricated materials has ensured faster construction that is also energy-saving and environmentally friendly. (Photo: China News Service/Yang Lei)](http://www.ecns.cn/hd/2019/04/25/e18e4eb126244ae1b437d072e0207791.jpg)
Construction workers build a new elevated road in Zhengzhou City, Central China's Henan Province. An innovative technology using prefabricated materials has ensured faster construction that is also energy-saving and environmentally friendly. (Photo: China News Service/Yang Lei)
![Construction workers build a new elevated road in Zhengzhou City, Central China\'s Henan Province. An innovative technology using prefabricated materials has ensured faster construction that is also energy-saving and environmentally friendly. (Photo: China News Service/Yang Lei)](http://www.ecns.cn/hd/2019/04/25/2f5f19b26244401888639fd1cc459ffa.jpg)
Construction workers build a new elevated road in Zhengzhou City, Central China's Henan Province. An innovative technology using prefabricated materials has ensured faster construction that is also energy-saving and environmentally friendly. (Photo: China News Service/Yang Lei)
![Construction workers build a new elevated road in Zhengzhou City, Central China\'s Henan Province. An innovative technology using prefabricated materials has ensured faster construction that is also energy-saving and environmentally friendly. (Photo: China News Service/Yang Lei)](http://www.ecns.cn/hd/2019/04/25/a50f170d225b4a4cb7fa14c3b5d696b0.jpg)
Construction workers build a new elevated road in Zhengzhou City, Central China's Henan Province. An innovative technology using prefabricated materials has ensured faster construction that is also energy-saving and environmentally friendly. (Photo: China News Service/Yang Lei)
![Construction workers build a new elevated road in Zhengzhou City, Central China\'s Henan Province. An innovative technology using prefabricated materials has ensured faster construction that is also energy-saving and environmentally friendly. (Photo: China News Service/Yang Lei)](http://www.ecns.cn/hd/2019/04/25/238fbc5a8d494acc85e9503d970b45c4.jpg)
Construction workers build a new elevated road in Zhengzhou City, Central China's Henan Province. An innovative technology using prefabricated materials has ensured faster construction that is also energy-saving and environmentally friendly. (Photo: China News Service/Yang Lei)