It is understood that within 15 days after signing of this SPA, for AU Metal (After execution by the Seller) Buyer’s Bank is obliged to provide Seller the Proof of Funds for verification and authentication. Should Buyer be unable completely to perform the Proof of Funds during these 15 days this Sales and Purchase Agreement for AU Metal will be automatically rendered null and void, without any written notification. If the Buyer need to extend the SPA for more 15 days must request in writing to Seller in 03 days before expired period, all cost to be born by the Buyer as usual. After the payment for extension had been paid to Seller, the extension of SPA shall be remained in force and effect immediately starting from the ending date of the old SPA.