Product Name: Air Spring for Qinghai-Tibet Railway Passenger Coach Certification: ISO9001 Customized: Customized Origin: China Product Description CRRC Hangzhou Digital Technology Co., Ltd is atechnology-based subsidiary of CRRC group,which have aprofessional team of rail transit vehicles, electromechanical, photoelectric, algorithm, IT ..etc. We have set up operation center and R& Dcenter in Qianjiang New City and Qiantang New District of Hangzhou.SRI have developed air spring of type SYS580H and SYS630H for Qinghai-Tibet passenger coach and Public service vehicles,which have been mounted on the cars in batches.The ageing-resistance and fatigue performance of products can fully meet the climate characteristics of oxygen deficit,high ozone concentration,strong solar radiation and strong ultraviolet radiation of Qinghai-Tibet Railway.