One part of the CRH range that was designed for regional intercity and commuter traffic is the CRH6. It was designed by CRRC Qingdao Sifang and built there and at two other CRRC factories. There are different variants which are designed for service speeds of 140 to 200 km/h and with a different interior design depending on the required capacity. By April 2023, 168 sets of all variants had been built.

The fastest variant is the CRH6A that was designed for 250 km/h and reaches 200 km/h in service. It consists of eight cars and has reversible seats. The CRH6A-A is a four-car variant of the CRH6A designed for areas with shorter distances between the stations that was optimized for faster acceleration and deceleration.

For commuter services, there are the eight-car CRH6F and the four-car CRH6F-A which reach 160 km/h in service. They don't have reversible seats and are optimized for a greater number of standing passengers. For suburban service, there are the Cinova 140 and Cinova 160 which have a different design, longitudinal seats and a higher number of doors.