In May of 2018, Ruihe plant started a business with SCJV from USA on the project of LA subway project. Ruihe is the only manufacturer to get the certificate of AC 157F-485 issued International Accreditation Service (IAS). Special concrete ties have been customized for this project that meet American industrial standard as well. This project is expected to be closed at the end of 2019.
IIIQa sleeper, as the special sleeper for the bridge, is applicable to ballasted track, with radius ≥350 m of curve track and direct track. The steel track of 60 Kg/m or 75 Kg/m can be used for this sleeper.