-months period ending 31 March 2019 To The President The Stock Exchange of Thailand We, ZEN Corporation Group Public Company Limited (“the Group”), are pleased to provide you our management discussion and

1 (Translation) MD. 108/2017 Aug 7, 2017 Re: Management Discussion and Analysis For the Operating Results ended June, 2017 To: President The Stock Exchange of Thailand Management Discussion and

บริษัท สำนักกฎหมายธรรมนิติ จำกัด Page 1 of 2 No. NDR006/2018 Date: 23 February 2018 Subject Management Discussion and Analysis (MD&A) Report for Q4/2017 Attention Directors and Manager, The Stock

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

Stock Exchange of Thailand N.D. Rubber Public Company Limited (“the Company”) would like to present the MD&A for the year 2017 as of 31 December 2017 as follows: QoQ % YoY % THB'm % Net sales 212.16

May 12, 2018 Subject : Management Discussion and Analysis for quarter ended March 31, 2018 Attention : President The Stock Exchange of Thailand 1. Operating Performance . Revenues (Thousands Baht

1 - TRANSLATION - KT/PB (Q-Con) 004/2019 February 4,2019. Attention Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for year 2018 Quality Construction

Palmer & Turner (Thailand) Ltd MJD.IR.012/2562 13 November 2019 Subject : Clarification of the operating result for the year 2019 ended September 30, 2019 To : Director and Manager The Stock Exchange

May 15, 2020 Subject : Management Discussion and Analysis for 1st quarter ended March 31, 2020 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1 Revenues Consolidated

company to clarify its plan for the preparation and submission of such financial statements, including the repayment of all bonds issued by the company together with the possible impacts on investors, so