then, on the Drawdown Date, which is any Business Day during the Drawdown Period, PSL together with each of the Subsidiary Borrowers may make the Drawing in the aggregate amount not exceeding US$5,600,000.- and the Lender may advance to such Borrowers the Loan or portion of the Loan that the Lender deems appropriate. The Drawdown Notice once received by the Lender shall be irrevocable