-1- AIT (VP-SEC) 028E/2022 November 10, 2022 Subject: Management's Discussion and Analysis of Operating Results for Q3-2022 To: The President of the Stock Exchange of Thailand Summary of Operations

-1- AIT (VP-SEC) 014E/2023 May 8, 2023 Subject: Management's Discussion and Analysis of Operating Results for Q1-2023 To: The President of the Stock Exchange of Thailand Summary of Operations Q1-2023

-Translation- 1 Ref. LPN/SorKor/060/2562 14th February 2019 Re: Establishment of a joint-stock company Dear Director and Manager Stock Exchange of Thailand Enclosed: Information on the establishment

December 2019 To: Managing Director of the Stock Exchange of Thailand Business Overview In 2019, the impact of trade war between the United States and China, together with the global economic slowdown caused

1 No. CC20180203ELE February 23, 2018 Subject Report of the Resolutions of Board of Directors’ Meeting No.1/2018 To President The Stock Exchange of Thailand The Board of Directors of Cal-Comp

" SET ESG Rating 2023 " 5  Financial Data / Company Business / Address / Major Shareholders / Management / Business News / Opportunity day belongs to The Stock Exchange of Thailand . Website users agree

into Material Transactions Deemed as Acquisition or Disposal of Assets, and the Notification of the Board of Governors of the Stock Exchange of Thailand, Re: Disclosure of Information and Other Acts of

period of 2019 To : The President of the Stock Exchange of Thailand The Company would like to provide details of changes in Profit and Loss as shown in the six-month period ending 30 June 2020 reviewed

lower than 6.25 percent of the outstanding. (6) shares listed on the Stock Exchange of Thailand and included in the SET 100 index calculation; (7) investment units of the Money Market Fund; (8) investment

percent of the outstanding. (6) shares listed on the Stock Exchange of Thailand and included in the SET 100 index calculation; (7) investment units of the Money Market Fund; (8) investment units of the