หน้า 1 จาก 1 Translation February 19, 2020 Subject: Management explanation and analysis for Year ended 31 December 2019 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public

หัวข้อ (Translation) No. Tor.For 17/2017 September 29, 2017 Subject : Progress of the decrease of registered capital of subsidiary Attention : The President of the Stock Exchange of Thailand The

set-q3-60 (Translation) LEE 21/2017 14 November 2017 Subject : Management Discussion and Analysis for the third quarter ended September 30, 2017 To : President of The Stock Exchange of Thailand We

set-q4-60 (Translation) Ref.No.LEE 02/2018 27 February, 2018 Subject : Management Discussion and Analysis for the year ended December 31, 2017 To : President of The Stock Exchange of Thailand We

Attn : The Directors and The MAI Manager Ref: Dimet AC 0818/1 August 27, 2018 Attention: The Directors and The MAI Manager The Stock Exchange of Thailand Subject: Year End result and clarification of

หนา้ 1 จาก 1 Translation November 13, 2019 Subject: Management explanation and analysis for Quarter ended 30 September 2019 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe

of IA;    (2) To designate the Stock Exchange of Thailand (SET), which is recognized by the SEC and acts as the central agency, to define the scope of knowledge and training standards and approve the

SEC plans to issue additional requirements relating to the structure of the Board of Directors and Management of IPO companies and listed companies to the current regulations on the check and

analysis on current conditions of assets. Accordingly, the SEC required GOLD and UV clarify the reasonableness of the assets valuation report used in making a decision to propose the asset disposition and

line with international practices. The proposals aim to support market readiness for current dynamic environment resulted from freer flow of capital and ever more connected capital markets and economies