The magnificent “F Building” at the headquarters of the BROAD Group, in BROAD Town, China. All stainless steel, no concrete. The stainless steel material is “B-CORE” invented by BROAD: Lighter yet far stronger than carbon steel, far more energy efficient, and far more durable with a limitless lifespan. B-CORE buildings are prefabricated and are installed on-site at an astonishing speed of 3 floors/day!