The first 25G coach was designed for mass transportation in 1992. It is able to running up to 140 km/h and has air conditioning units. The life time is 30 years.
The coaches adopt disc brake, 104 integrated electro-pneumatic brake units, manual plug sliding door or hinged steel door, pedal seal closet pot in toilets, vestibule rubber diaphragm, etc. There are commodious berths, seats and stylish ceiling lights inside coaches so that people feel comfortable and cheer in journey.