frp stair tread. The production process of FRP results in less waste compared to traditional materials. Additionally, the long lifespan of FRP reduces the need for replacements, further minimizing environmental impact. In a world becoming increasingly conscious of eco-friendly practices, FRP stair treads stand out as a green choice for both residential and commercial buildings.The hard carbon aerogel can maintain the super-elasticity in harsh conditions, such as in liquid nitrogen. Based on the fascinating mechanical properties, this hard carbon aerogel has promise in the application of stress sensors with high stability and wide detective range (50 KPa), as well as stretchable or bendable conductors. This approach holds promise to be extended to make other non-carbon based composite nanofibers and provides a promising way of transforming rigid materials into elastic or flexible materials by designing the nanofibrous microstructures.