auction sale of contact deatils: md ibrahim, ac/qm, contact no. 9064055081 / 9811951192 as per notification no.36/2017 central tax (rate) dated 13-10-2017 and notification no.37/2017 integrated tax (rate) dated 13-10-2017, principal / seller being govt. unit, so gst and cess on goods will be deposited by buyer under reverse charge mechanism. comn store items