CRRC metro train enters service in Boston
https://www.metro-report.com/news/news-by-region/americas/single-view/view/crrc-metro-train-enters-service-in-boston.html
It's interesting that US accepted Chinese train manufacturer to install new trains in Boston's new line amid trade war between US and China.
I guess it means US lost technology of manufacturing trains after motorization, and resulted in the case that the country has to rely on
CRRC to procure trains with lower cost.
