Thanks jaitoshniwal1 for the info. Tax exemption till FY15 and Excise benefit are very objective information which I tried to search in the Annual Report for 2015 but couldn't find it.
They seem to be paying tax may be there is some special rate but shouldn't it be mentioned in Annual Report?
Profit before tax 4204.95
Profit after tax 3258.86
Similarly there is nothing much about Excise duty.
Disc: Invested and novice in reading financial statements.