providing of garden maintenance services at national science centre , delhi , providing of garden maintenance services at national science centre , delhi , quote agencys montly service charges only over and above the departmental estimate given in annexure -vi ( for providing garden maintenance services ) excluding minimum wages and statutory levies as mentioned in annexure- vi . ( qupte your service charges only on per month basis ) , charges for supply of consumable materials , machines , equipments , plants , potted flowers plants etc . as per annexure- ix . ( quote your lump sum rate on per month basis )