(Translation) Ref.No.LEE 01/2020 27 February, 2020 Subject : Management Discussion and Analysis for the year ended December 31, 2019 To : President of The Stock Exchange of Thailand We submit

August 11, 2020 Subject : Management Discussion and Analysis for Six-month and 2nd quarter ended June 30, 2020 Attention : President The Stock Exchange of Thailand Operating Performance 1. Revenues

: BC.017/2018 May 11, 2018 Subject Interim Management’s Discussion and Analysis for the three months ended March 31, 2018 To The President The Stock Exchange of Thailand Management Discussion and

months ended June 30, 2018 To The President The Stock Exchange of Thailand Management Discussion and Analysis Consolidated Financial Statements For the six-month period ended June 30, 2018 Operating

-month period ended September 30, 2018 To The President The Stock Exchange of Thailand Management Discussion and Analysis Consolidated Financial Statements For the nine-month period ended September 30

: pato1@cscoms.com August 11, 2017 President The Stock Exchange of Thailand The consolidated financial statement of Pato Chemical Industry Plc. and its subsidiary for Q2 ended June 30, 2017 operational

February 27, 2019 Subject : Management Discussion and Analysis for year and 4th quarter ended December 31, 2018 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1

November 14, 2019 Subject : Management Discussion and Analysis for Nine-month and 3nd quarter ended November 30, 2019 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1

August 14, 2019 Subject : Management Discussion and Analysis for Six-month and 2nd quarter ended June 30, 2019 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1

(Translation) Ref.No.LEE 11/2020 11 August, 2020 Subject : Management Discussion and Analysis for the second quarter ended June 30, 2020 To : President of The Stock Exchange of Thailand We submit