TZ has independently developed traction gearboxes for domestic CRH and urban rail. Main products are type A and type B traction gearbox for urban rail, traction gearbox for 100% low-floor train, traction gearbox for high-speed rail (250-350km/h), etc. TZ is capable of manufacturing and overhauling 10000 gear boxes of various types per year.
The axles developed by TZ for 250km CRH3A have been tested and axles for 350km CRH have been certified by CRCC and manufactured in volume.
TYHI Railway Transit Equipment Co., Ltd.