The process of 3D printing is no longer a unique or rare practice, as the technology has become widely used.
In Shanghai, 16 bus stations have been constructed by a 3D printer. Locals were shocked to see the bus stations, saying the new structures came out of nothing. Well that's because these bus stations can be printed within a day, and installed within two hours. They're composed of recycled materials, while the so-called printing ink, is both affordable and eco-friendly.