Sir, we are a pvt limited company providing supply and erection of Sewage Treatment plant for Development commmissioner CSEZ.Usually we are providing operation of the plant of the plant without charging service tax and showing as exempted service.But as per new notification whether it is chargable service or not .From our information from S T dept,we should raise the service bill as any other party and Development commmissioner of CSEZ can claim refund.iF IT SO ,wHat is the befit for an CSEZ unit,as they are providing payment including service tax to us and after that he can claim refund from govt.Im in utter confusion,pls advise sir. Regards sini