the Board of Directors’ meeting for connected transaction and Schedule date for the Extraordinary General Meeting of Shareholders No. 1/2016 To: The President, The Stocks Exchange of Thailand The Board

Extraordinary General Meeting of the Shareholders No. 2/ 2 5 6 1 , Land purchased from the connected person and sell in investment of the subsidiary (Revised) Attention The President The Stock Exchange of

สิ่งที่ส่งมาด้วยลำดับที่ 1 1 Information Memorandum of the Acquisition of Assets (IM1) of Dimet (Siam) Public Company Limited According to the resolution of the Board of Directors’ Meeting No. 3/2018

-Translation- Ref. No. PorBor. 001 / 2020 January 6, 2020 Subject: Notifying the resolution of the Board of Directors’ Meeting and Schedule of Entering into Transaction of Disposing of Subsidiary’s

the Requirement to Make the Tender Offer for all Securities of the Business by Virtue of the resolution of the Shareholders’ Meeting (Whitewash), Appointment of the Independent Financial Advisor and

(Translation) No. 10000000/008/62 22 January 2019 Subject: Resolutions of the Board of Directors’ Meeting regarding the investment in the Energy Recovery Unit Project through the acquisition of the

is increased by Baht 189 million or 52% compared to the revenue of the prior year. It results from the increase in orders from a major customer of the manufacture and assembly of electronic circuit

million or 39% compared to the revenue of Baht 1,657 million for 2016. It results from the increase in orders from a major customer of the manufacture and assembly of electronic circuit boards business unit

orders from one of the major customers of the manufacture and assembly of electronic circuit boards business unit. Telecommunication business The Company had revenue from telecommunication business for the

a decrease in orders from one of the major customers of the manufacture and assembly of electronic circuit boards business unit. Telecommunication business The Company had revenue from