May 25, 2017 Subject: Notification on the Acquisition of Assets of AAPICO Hitech Public Company Limited To: The President The Stock Exchange of Thailand Enclosure: Information Memorandum Concerning the
market risk และ specific risk ของตราสารทุนและเทียบเท่า หุ้น General market risk Specific risk SET 50 individual stock/ หุน้ต่างประเทศ ในกลุ่ม large market capitalization 8% 12% Non SET 50 individual stock
entering into the transaction of acquisition and disposal of assets and the connected transaction To President The Stock Exchange of Thailand Enclosure Information Memorandum on the Acquisition and Disposal
Shareholders in Proportion to their Respective Shareholdings and Convening of the Extraordinary General Meeting of Shareholders No. 1/2018 To: President The Stock Exchange of Thailand Enclosure: 1. Information
Stock Exchange of Thailand Enclosure: 1. Information Memorandum Re: Acquisition of Assets of T.K.S. Technologies Public Company Limited (Schedule 1) 2. Information Memorandum Re: the Allocation of the
Shareholders in Proportion to their Respective Shareholdings and Convening of the Extraordinary General Meeting of Shareholders No. 1/2018 (Second Amendment) To: President The Stock Exchange of Thailand
capital market products, or capital market products traded on the Stock Exchange of Thailand or derivatives exchange, the intermediary may reduce details in methods and procedures of the communication and
products, or capital market products traded on the Stock Exchange of Thailand or derivatives exchange, the intermediary may reduce details in methods and procedures of the communication and service providing
into Material Transactions Deemed as Acquisition or Disposal of Assets, and the Notification of the Board of Governors of the Stock Exchange of Thailand Re: Disclosure of Information and Other Acts of