วันที่ 25 กุมภาพันธ์ 2558 February 18, 2020 Subject: Management’s Explanation and Analysis for the year ended December 31, 2019 Attention: Director and Manager The Stock Exchange of Thailand LDC

วันที่ 25 กุมภาพันธ์ 2558 May 15, 2020 Subject: Management’s Explanation and Analysis for the 3 months period ended March 31, 2020 Attention: Director and Manager The Stock Exchange of Thailand LDC

1188 FAX : +66 (0) 2625 1103 www.jubileediamond.co.th No. CS14/2020 August 11th, 2020 Subject: Declaration of Operating Results for the 2nd quarter ended 30 June 2020 Attn: Director and Manager, The

นาสูความเปนเลิศ ทั้งในดานพาณิชยและคุณภาพผลิตภัณฑอยางเปนมืออาชพี” August 14, 2020 Subject: Clarification on the cause of changes in operating results. To: Director and Manager The Stock Exchange

1 Translation CEN 015-2019 November 14, 2019 Subject : Management Discussion and Analysis for business operation in Quarter 3-2019 To : The Manager and President The Stock Exchange of Thailand

1 Translation CEN 013-2019 August 14, 2019 Subject Management discussion and analysis for business operation Quarter 2-2019 To The Manager and President The Stock Exchange of Thailand Operating

1 Translation CEN 031-2018 August 14, 2018 Subject : Management Discussion and Analysis for business operation of Quarter 2-2018 To : The Manager and President The Stock Exchange of Thailand Business

Translation DIMET AC 2008/001 August 31, 2020 Subject Management Discussion and Analysis for business operation year 2019 (July 1, 2019 - June 30, 2020) To The Manager and President The Stock

discussion and analysis for the year ended December 31, 2018 To Director and Manager of the Stock Exchange of Thailand Referring to the submission of the audited financial statements of Wiik & Hoeglund Public

Ref Ref. HF 0021 / 2018 February 23rd, 2018 Subject : Notification of the resolution of the Board of Directors No. 1/2018 (Edit) To : Director and Manager of The Stock Exchange of Thailand We, Hwa