preventive maintenance and service of fire alarm and detection system , round the clock operation , preventive maintenance including providing emergency support and service related to fire alarm & detection system installed at technician studio , tollygunge , kolkata-700033 [ as per terms & conditions depicted in annexure a ] . , note: 1 ) rate should be quotated for per month basis including all taxes & duties and it will be adjusted automatically for 12 months . 2 ) total is rounded off to the nearest rupee and inclusive of labour welfare cess @1% on total amount of above items ( i . e . item sl . no . 1 . 00 ) as applicable . 3 ) @10% of the tendered amount should be submitted by the successful bidder in the form of bank guarantee from any schedule bank within seven working days from the date of issuance of loa , if the accepted bid value is 80% or less of the estimated amount put to tender