given rating scale applies. 1.7 Credit ratings should be assigned by the CRA as an entity (not by an analyst or other employee of the CRA). 1.8 A CRA should assign analysts who, individually or

2,778 +10% Authorized share capital 140 140 - Issued and fully paid-up share capital 140 140 - Share premium 6 6 -0.0% Retained earnings 1,276 1,270 +0.5% Other components of equity 196 196 -0% Deduct

(authorized director) ในผู้ขอผ่อนผัน) และมีบคุคลอ่ืนเป็นผูร้ับประโยชน์ที่แท้จริง (ultimate shareholder) (เช่น ผู้ถือหุ้นมีสถานะเป็น holding company หรือ nominee account) ให้ระบชุื่อบุคคลที่เป็น ultimate

3,508 (3%) Authorized share capital 140 140 0.0% Issued and fully paid-up share capital 140 140 0.0% Share premium 6 6 0.0% Retained earnings 689 829 (17%) Other components of equity 180 189 (5%) Deduct

-17% Other non-current liabilities 127 138 -8% Non-current Liabilities 203 235 -14% Total Liabilities 2,217 2,061 +8% Authorized share capital 140 140 +0% Issued and fully paid-up share capital 140 140

to be made as appropriate. Please be informed accordingly. Yours sincerely, -Signature- (Mr. Slib Soongswang) Chief Executive Officer Authorized Signatory Attachment 1 -Translation- 1/18 Information

Authorized Signatory Attachment 1 (F 53-4) -Translation- 1/8 Capital Increase Report Form Hydrotek Public Company Limited 21 September 2017 and Additional Amendment We, Hydrotek Public Company Limited, hereby

+11% Total Liabilities 2,587 2,061 +26% Authorized share capital 140 140 +0% Issued and fully paid-up share capital 140 140 +0% Share premium 6 6 -0% Retained earnings 1,242 1,229 +1% Other components

the Information Memorandum on Asset Disposal, Transaction No. 2, and are attached hereto as Enclosure 3. Sincerely yours, (Mr. Peerapong Jaroon-ek) Director and Chief Executive Officer Authorized

: Category A investor contact referring to investor contact that is authorized to analyze securities investments, and Category B investor contact referring to investor contact that is unauthorized to analyze