QINGDAO, Jan. 11 (Xinhua) -- A carbon fiber metro train, dubbed CETROVO 1.0, began passenger service on Friday in the port city of Qingdao in east China's Shandong Province.

根据白皮书的数据显示，中国眼镜片行业在近年来持续增长，2023年市场规模达到了580亿元，预计到2024年将突破600亿元大关。这一增长主要得益于两方面的因素：一是人口老龄化加剧，尤其是近视、远视等视觉问题的普遍存在；二是智能设备的普及，使得消费者对 ...

"Advanced materials like carbon fiber were also incorporated to reduce weight while maintaining strength, thereby ensuring ...