A two-story building was constructed using 3D technology at the Nantong Vocational College in Nantong city, East China’s Jiangsu province, Aug 12, 2015. The 110 square meter structure was completed in three hours, using mainly prefabricated pieces, at a cost of 300,000 yuan ($46,000). Over 90 percent of the construction was done in factories, and then involved simple assembly on site, a source said. The prefabricated pieces were made of recyclable materials, such as straw and wooden waste. (Photo/CFP)
