annual comprehensive maintenance & servicing of split type ac machines installed at residence of senior ias officers and chief advisor, wb at 12, ballygunge circular road,kolkata-700019.- 1 annual comprehensive servicing & preventive maintenance of 1.5 tr split type air conditioner machine as per attached terms & conditions. 2 annual comprehensive servicing & preventive maintenance of 2.0 tr split type air conditioner machine as per attached terms & conditions. 3 charges for providing 1(one) no. ac mechanic (skilled labour) in 1 shift per day on days(from 10 a.m to 6 p.m) as & when required (including saturday, sunday & holidays) in respect of proper maintenance of the afore-said ac machines & performing other duties as per attached terms & conditions. 4 charges for providing 1(one) no. helper (unskilled labour) in 1 shift per day on days(from 10 a.m to 6 p.m) as & when required (including saturday, sunday & holidays) in respect of proper maintenance of the afore-said ac machines & performing other duties as per attached terms & conditions. 5 add. g.s.t.@ 18% on total value. 6 add. lwc.@ 1% on total value