No. ADD 25/2022 9 August 2022 Subject: Management discussion and analysis for the performance for the six-month period ended 30 June 2022 To: President The Stock Exchange of Thailand AddTech Hub

No. ADD 31/2022 8 November 2022 Subject: Management discussion and analysis for the performance for the nine-month period ended 30 September 2022 To: President The Stock Exchange of Thailand AddTech

Public Company Limited To President The Stock Exchange of Thailand Reference GPSC’s letter No. 10040000/021/58 dated on August 26, 2015 regarding the project of Central Utility Plant 4 or Central Utility

- Translation - Ref J61/007 18 July 2018 Subject: Board of Director Resolution for Receipt Financial Assistance from Major Shareholder Attention: President The Stock Exchange of Thailand Regarding to

เลขที่ 50/2544/……… - Translation - No. 51/2018/042 10 August 2018 Subject: Board Meeting Resolution on Connected Transaction To: The President, The Stock Exchange of Thailand Attachment: Information

-9320 Ref: PLC 2018/015 December 26, 2018 Subject: Disclosure of Connected Transaction Information (Machine Purchasing) To: The President of the Stock Exchange of Thailand Panjawattana Plastic Public

Ref. DBP. 024 / 2020 February 25, 2020 Subject : Clarification on Operating Results of Year 2019 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its

Ref. DBP. 025 / 2018 February 21, 2018 Subject : Clarification on operating results of Year 2017 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its

ที่ กตพ Ref. DBP. 073 / 2019 May 13, 2019 Subject : Clarification on Operating Results for the 1st quarter ending March 31, 2019 To : President The Stock Exchange of Thailand Diamond Building

a result, the refinery business recorded an Inventory Loss of THB 1,253 million (including a reversion of lower of cost or market (LCM) THB 689 million) in 2019, which adversely affected the