E2 (CRH2) is what CRH380A (first Chinese design with foreign technology) based on and proven to be more reliable than German ICE3 (CRH3) due to E2 able to tolerate warmer climate. Chinese made E2 modified to be 350-380km/h capable (which the Japanese engineers are not very happy about, export design was limited to 250), experience gained from it is invaluable for paving the way to FuXin series (CR400A & CR400B)