 These trains are modified CRH2Bs, outfitted with traditional railway sleeping berths (couchette car) and have been given designations CRH2E (numbered CRH2-121E - CRH2-140E).Each CRH2E has thirteen 1st class sleeping cars (WR), two 2nd class seating cars (ZE), and one buffet car (CA) or one second class/dining car (ZEC).Designed maximum operation speed is with 9600 kW of power output.