Carbon fiber subway train

On January 10, 2025, the world's first carbon fiber subway train "CETROVO 1.0 Carbon Star Express" jointly developed by Qingdao Metro Group and CRRC Sifang Co., Ltd. was officially launched on Qingdao Metro Line 1 and put into commercial operation. The train fills the international gap in the commercial use of carbon fiber composite materials in the main load-bearing structure of subway vehicles, reduces the weight of the whole vehicle by 11%, and reduces the operating energy consumption by 7%, leading China's subway trains to achieve a new upgrade in lightweight and green.