หน้า 1 จาก 1 Translation August 8, 2018 Subject: Management explanation and analysis for Quarter ended 30 June 2018 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public

YONG THAI PUBLIC COMPANY LIMITED 633/14 Sathupradit Road, Yannawa, Bangkok 10120 Thailand Tel. (662) 2943364-8, Fax : (662) 2943373 YTC 19/2018 November 14, 2018 To : The President The Stock Exchange

หนา้ 1/1 NO. FA61-900 14 November 2018 Subject : Management Discussion and Analysis of operating performance for 3rd quarter, 2018 Attention : President of the Stock Exchange of Thailand JCK

The Stock Exchange of Thailand T.C.J. Asia Plc. and subsidiaries would like to clarify the operating result of the Company for the year 2017 as follow; Consolidated financial statement Operating

No No. CC20190204ELE February 27, 2019 Re: Clarification of the changes in operation performance for the year ended 31 December 2018 Attn: The President The Stock Exchange of Thailand Cal-Comp

Page 1 of 2 May 15, 2019 Subject: Explanation of Financial Performance for the Quarter 1/2019 ended March 31, 2019 To: President, The Stock Exchange of Thailand According to the Financial Statements

SAAM Energy Development Public Company Limited - 1 - 21 February 2020 Subject: Management Discussion and Analysis for the year ended 31 December 2019 To: The President The Stock Exchange of Thailand

Million Baht 2020 2019 Sales 1,756.01 1,684.73 Cost of Sales 1,475.46 1,586.07 Gross Margin 280.55 98.66 Gain (loss) on exchange rates (23.34) 21.83 Other Incomes 27.64 4.97 Total Revenues 1,783.65 1,711.52

Our Ref: TL015/02 Our Ref: TL012/18 August 14, 2018 The Stock Exchange of Thailand 93, The Stock Exchange of Thailand Building Ratchadapisek Road, Dindaeng Bangkok 10400 Attention: The President Dear

Page 1 of 2 SET 007/2020 12 August 2020 Subject Management Discussion and Analysis for the second quarter 2020 To The President of the Stock Exchange of Thailand The Company would like to provide