We shall provide the supervision for erection & commissioning of the supplied equipments for 45 days free of charges for 2/3 visit basis for maximum two engineers. Beyond that, supervision shall be on chargeable basis @ USD 150 per day per engineer. To & fro AIR fare from Kolkata to site shall be borne by Customer for each visit of our engineers within mentioned period. However arrangement of free local boarding, lodging & conveyance for our E&C Engineers during their visit at your site shall be at your scope. (For free service period as well as chargeable period)