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1 Ref: AC.006/2019 25 February 2019 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

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-1- AIT (VP-SEC) 018E/2018 August 9, 2018 Subject: Management's Discussion and Analysis of Operating Results for Q2-2018 To: The President of The Stock Exchange of Thailand Summary of Operations Q2

MDA Q2_61 EN -Translation- No. ECF2 033/2018 August 15, 2018 Subject: Management Discussion and Analysis of the 2nd quarter ended June 30, 2018 To President The Stock Exchange of Thailand East Coast

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, 2018 To : President The Stock Exchange of Thailand K. W. Metal Work Public Company Limited (the “Company”) would like to submit management discussion and analysis for the quarter ended September 30, 2018

, Samutsakhon 74000 No. DOD43/2563 May 14, 2020 To: The President The Stock Exchange of Thailand (SET) Subject: Management’s Discussion and Analysis for the first Quarter of 2020 DOD Biotech Public Company