I, MR. CHUTIPHON KHUMCHOO, AUTHORIZED ACCOUNT HOLDER; DO HEREBY AGREE TO ISSUE FULL AUTHORIZATION AND IRREVOCABLE POWER-OF-ATTORNEY PARTNERSHIP FOR MONETIZATION OF BANK GUARANTEE (BG) AS WELL AS TO OPEN ACCOUNTS, TRADE, PPP, DEPOSIT, FUND, CREDIT ENHANCE AND AUTHORIZED SIGNATORY POWER TO ONE CHOICE FINANCIAL SERVICES, EDUARDO STALLINGS, (CEO) OF SAID BANK GUARANTEE (BG) IN THE AMOUNT OF US$1,000,000,000.00 (ONE BLLION UNITED STATES DOLLARS)