, (Mr. Charoen Rujirasopon, Mrs. Niramon Rujirasopon) Authorized Directors

Chief Executive Officer Authorized Signatory (Translation) — 1 — Enclosure 1 Summary of Adjustment of the Exercise Ratio by adjusting Number of ORI-W1 Reference is made to the issuance of 406,573,990

increased. Sincerely Yours, (Mr.Wichian Silapacharanan) Deputy Managing Director Authorized to sign on behalf of the company 5 Investor Relations Department Tel: 0-2531-6633, 0-2993-5080-7 ext. 403, 401

be authorized to perform any actions related to the disposal of Land and Buildings to NML, including to sign and negotiate terms and other details in land and buildings sale and purchase agreement

Gumchai Director and The Company’s Secretary Authorized sign on behalf of the Company

- Please be informed accordingly. Yours Faithfully, Dr. Wijit Techakasem Managing Director Authorized Person to Sign on Behalf of the Company Company Secretary Tel. 02-518-2722 Ext. 649 Fax. 02-518-2723

Chief Executive Officer Authorized Signatory (Translation) — 1 — Enclosure 1 The amended contents are written and underlined in blue. Summary of Adjustment of the Exercise Ratio by adjusting Number of ORI

6.22 percent of authorized and paid-up share capital as at 3 December 2018. 5. Source of Fund Operating cash flow of the company and shall not impact core business operation. 6. Interested Director The

Rujirasopon) Authorized Directors

informed accordingly, Yours sincerely, …………………………………… Paitoon Gumchai Director and The Company’s Secretary Authorized sign on behalf of the Company