(1) Except as otherwise provided in the purchase agreement, if it is necessary to adjust the price during the execution of the purchase agreement for a period of more than two months, the authorized officer may adjust the price. However, in the case of procurement of public construction works, in the event that a national-level tender has been invited and a purchase agreement has been concluded, if the price of any construction material unexpectedly decreases by more than ten percent of the original price, ten percent will be deducted from the increased or decreased amount, and the price will be adjusted as specified.
(2) Notwithstanding anything written in sub-section (1), due to the delay of the person receiving the purchase agreement, if the work as per the agreement is not completed within the period mentioned in the agreement and takes more time, or if the purchase agreement is based on a lump sum contract or a fixed budget, price adjustment Can't be done.