February 22, 2018 SET-18-AC-001 Dear The President The Stock Exchange of Thailand Subject: Clarification of Result’s Operation for the year ended 31 December 2017 According to the resolution of BKD’s

Feb 23, 2018 Subject: Management Discussion and Analysis for Year Ended December 31, 2017 To: Listing Department, Stock Exchange of Thailand Patkol Public Company Limited : Management Discussion and

MDA 2560ENG.1 Final v.1 Page 1 of 2 No. NDR006/2018 Date: 23 February 2018 Subject Management Discussion and Analysis (MD&A) Report for the year 2017 (Revise) Attention Directors and Manager, The

คำอธิบายและวิเคราะห์ของฝ่ายจัดการ2560Eng (Translation) February 24, 2018 Subject Clarification of operating Results and financial Status for the year ended December 31, 2017 Attention The President

Microsoft Word - CS 2561-003 YR 2017 to SET (T_E) [ TRANSLATION ] Our Ref. JTS/CS-003/2561 February 26, 2018 Subject : Report on the Company’s operating results of the year 2017 To : President of the

(Auto 11 Lines) Fax: +66(0)2-192-3744 Page 1 of 1 -Translation- No. ED-MD18-004 26th February 2018 Subject : Clarification of changes in excess of 20% in the operating results for year ended 2017 To

ที่ BCH No. BCH 018/2018 26 February 2018 Subject : Explanation of the changes in operating results for the year ended 31 December 2017 which exceed 20% To : The President The Stock Exchange of

ที่ BCH No.BCH.019/2018 26 February 2018 Subject : Approval of transaction with connected person Attention : The President The Stock Exchange of Thailand The Board of Directors’ Meeting of Bangkok

ที่ BCH No.BCH.019/2018 26 February 2018 Subject : Approval of transaction with connected person (Additional) Attention : The President The Stock Exchange of Thailand The Board of Directors’ Meeting

of Thailand Subject : Clarification of the operating result for the Year 2017 Dear Sir, Yong Thai Public Company Limited is pleased to report the operating results for the year 2017, ended December 31