Acquisition of Assets of IGEN Engineering Company Limited ("IGE") (Revised) To: Director and Manager The Stock Exchange of Thailand The resolution of the Board of Directors’ Meeting No.3/2018 of Dimet (Siam

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

Health Organization declared the Coronavirus (“COVID-19”) outbreak as a pandemic which resulted in travel restriction, lockdown and other precautionary measures imposed in various countries including

the Securities and Exchange Act B.E. 2535 (1992) , as amended by the Securities and Exchange Act (No. 4) B.E. 2551 (2008) , and Section 114 of the Securities and Exchange Act B.E. 2535 (1992) , which

Securities and Exchange Act B.E. 2535 (1992), as amended by the Securities and Exchange Act (No. 4) B.E. 2551 (2008), and Section 114 of the Securities and Exchange Act B.E. 2535 (1992), which contain certain

decreased which resulted from net gain on foreign exchange. In Q2/2019, the Company and subsidiary posted net gain from foreign exchange Baht 434 million while same period of last year posted net loss from

adapts the policies in relation to various conditions of each country. Nonetheless, the Company reiterated stringent health and hygiene protocols to be in line with the World Health Organization and local

-Translation- Ref. No. PorBor. 029 / 2020 19 June 2020 Subject: Entering into Transaction of Disposing of Subsidiary’s Machines for the Debenture Debt repayment To: President The Stock Exchange of

Securities and Exchange Act B.E. 2535 (1992), as amended by the Securities and Exchange Act (No.4) B.E. 2551 (2008), Section 100, Section 103(9) and (10), Section 109, Section 114, Section 115, Section 116 and

1 Ref. No. IVL 007/08/2017 9 Aug 2017 The President The Stock Exchange of Thailand Subject: Submission of Quarterly Reviewed Financial Statements and the Management Discussion and Analysis of