The construction of Yujiapu Station 's shell-shaped membrane
As  the extended line of the inter-city railway between Beijing & Tianjin, the Yujiapu Station shell shaped ceiling is China's first underground high speed train station. The ceiling, also the world's first single layer steel shell structure, looks like a delicate painting floating in the air. Using next-generation material, ETFE Film (ethylene tetrafluoroethylene), perfect choice for roofing and facade construction, showing us impressive structure and also an energy saver.
Yujiapu Station's shell shaped ceiling ( ETFE )

Yujiapu Station to extend Beijing-Tianjin economic circle to Binhai