Ref. DBP. 111 / 2020 August 10, 2020 Subject : Clarification on Operating Results for the 2nd quarter and 6-month period ending June 30, 2020 To : President The Stock Exchange of Thailand Diamond

maintenance cost. This, partly, has been a contributing factor of increased maintenance cost reported in Q1/2020 onwards. 2. Since Q1/2020, net foreign exchange gain (loss) has taken into account fair value

10th May, 2018 Subject: Management Discussion and Analysis (MD&A) of the financial as at and for three months’ period ending 31st March, 2018 Attention: President The Stock Exchange of Thailand P.C.S

(Translation) NEP-AC 001/2561 10 May 2018 Subject : Management Discussion and Analysis for 1st Quarter ended March 31, 2018 To : The President The Stock Exchange of Thailand Operating Result NEP

Acc. 005/2018 May 10, 2018 To: The President The Stock Exchange of Thailand Subject: Management discussion and analysis (MD&A) for Quarter 1/2018 Dear Sir, S. Khonkaen Foods Public Company Limited or

nine-month period ending 30 September 2018 To The President The Stock Exchange of Thailand We, ZEN Corporation Group Public Company Limited (“the Group”), are please to inform you our management

-months period ending 30 September 2018 (revised) To The President The Stock Exchange of Thailand We, ZEN Corporation Group Public Company Limited (“the Group”), are please to inform you our management

Ref. No. 1902-009EN February 21, 2019 Subject: Operating Result Clarification for the year 2018 (Ending December 31, 2018) To: Director and Manager of the Stock Exchange of Thailand Ubis (Asia

-4124 MMS-AC62/004 February 22, 2019 Subject Management discussion on 2018 operating results To The President of Stock Exchange of Thailand For 2018 operating performance, which was audited by the

Ref. PDI/BK-BS-011/2019 25th February 2019 Re: Management Discussion and Analysis (MD&A) For the year ended December 31, 2018 To: President The Stock Exchange of Thailand Due to depletion of Mae Sod