t-tender for comprehensive annual maintenance contract of solar water heating system for two years , comprehensive annual maintenance contract of solar water heating system for two years in gautam buddha university . , we / i hereby tender for the execution of above mentioned work according to the bill of quantities , specifications and terms & conditions referred in the tender documents within the time frame as mentioned and in accordance with the specifications , designs , drawings and instructions in writing and with such materials as are provided for and in all other respects in accordance with such condition so far as applicable . i / we hereby agree to the percentage mentioned ( below / above ) on the printed rates of the bill of quantities for the execution of the above work .