Aerial photo taken on February 16, 2019, shows a 3D printed restroom at the Museum of the South China Sea in Qionghai, Hainan Province. The energy-efficient and environmentally-friendly facility has become one of the new highlights of the tourist resort. [Photo: IC]"

Photo taken on February 16, 2019, shows a 3D printed restroom at the Museum of the South China Sea in Qionghai, Hainan Province. The energy-efficient and environmentally-friendly facility has become one of the new highlights of the tourist resort. [Photo: IC]"

People visit the newly-built 3D printed restroom at the Museum of the South China Sea in Qionghai, Hainan Province, February 16, 2019. The energy-efficient and environmentally-friendly facility has become one of the new highlights of the tourism resort. [Photo: IC]"

People visit the newly-built 3D printed restroom at the Museum of the South China Sea in Qionghai, Hainan Province, February 16, 2019. The energy-efficient and environmentally-friendly facility has become one of the new highlights of the tourism resort. [Photo: IC]"