Determination of the Date of Extraordinary General Meeting of Shareholders No. 1/2018 To: President The Stock Exchange of Thailand Enclosures: 1. Information Memorandum on the Offering of Newly Issued Ordinary

transactions only matter in Clause 2 to 3 as well as the president conditions in the entire business transfer agreement the Extraordinary General Meeting of Shareholders No. 1/2018 Connected Transaction as

ไฮโดรเท็ค จํากดั (Translation) No. 024/0461 April 4, 2018 Subject Notification of the Board of Directors No.6/2018 Re: Convening the Extraordinary Shareholders’ Meeting No.1/2018; an Acquisition of

”) would like to inform you that, in accordance with the resolutions of the Board of Directors’ Meeting No. 10/2017 held on October 30, 2017 and the Extraordinary General Meeting of Shareholders’ No.1/2018

-up capital in TSE Overseas Group Company Limited on 26 April 2018.   - 2 - 3. To propose to the extraordinary general meeting of shareholders for consideration and approval the aquisition of the

advisor and extraordinary general meeting of shareholders. Management benefit expenses In Q1/2018, the management benefit was Baht 4.35 million compare with the same period of previous year amount to Baht

to investors in private placement, the acquisition of assets and convening the Extraordinary General Meeting of the Shareholders No. 1/2018 (Revise) To : President, The Stock Exchange of Thailand

to investors in private placement, the acquisition of assets and convening the Extraordinary General Meeting of the Shareholders No. 1/2018 (Revise 2) To : President, The Stock Exchange of Thailand

Extraordinary General Meeting of Shareholders No. 1/2017 held on September 8, 2017. Agenda 2 To acknowledge the report on the annual operation of the Company for the year 2017. Agenda 3 To approve the Company’s

market value, during the beginning of the year 2018, the Company asked for approval of the disposal of Land and Buildings from the Extraordinary General Meeting of Shareholders No. 1/2018 held on 28