Who manufacturers these 2S coaches ICF Chennai or MCF Rai Bareilly ? Because after travelling in the 2S Second sitting of Karnavati Express I was impressed with the individual and reclining seats of 2S, I thought this is the future of 2S, the best a common man can get in a throwaway price. But what made railways manufacture this combined seats at 90 degree. I have travelled yesterday in this Jan Shatabdi and it gave me serious back ache due to this 90 degree seats. This 2S is not recommended for travel of long duration.