-English translation- No. M06/003/19 May 14, 2019 Subject Clarification of Q1/2019 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

May 15, 2019 Subject: Notification of the resolution of the Board of Directors in relation to the approval of financial statements of the 1st quarter of fiscal year 2019 To: The President The Stock

จดหมายชี้แจงQ162e May 15, 2019 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for the three- month period ended 31 March 2019 Summary of the 1 st

ACC6207/003 25 July 2019 Subject Inform the progress of the sale stock in the subsidiary company To Director/ Managing Director The Stock Exchange of Thailand Refer to the company's letter No

, THUNGMAHAMEK SATHORN, BANGKOK 10120 PHONE : +66 (0) 2625 1188 FAX : +66 (0) 2625 1103 www.jubileediamond.co.th No. CS10/2019 August 13rd, 2019 Subject: Interim Dividend Payment 2019 Attn: Director and Manager

AC 52/07-003 ACC1/19-042 August 13, 2019 Subject: Management Discussion and Analysis Quarter 2 Ending June 30, 2019 To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public

หน้า 1 จาก 1 Translation August 13, 2019 Subject: Management explanation and analysis for Quarter ended 30 June 2019 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public

Announcement of 2006 Public Holidays HPIR /015 August 13, 2019 Subject : Management Discussion and Analysis of the operating performance for the 2st quarter of 2019 Attention : The President of the

-English translation- M06/006/19 August 14, 2019 Subject Clarification of Q2/2019 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

Ref Ref. 2S_BoD013/2019 August 14, 2019 Subject: Clarification of the change in operating result more than 20% To : The president The Stock Exchange of Thailand 2S Metal Public Company Limited (the