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

Meeting of Shareholders’ agenda To President The Stock Exchange of Thailand Reference: 1. The letter to the Stock Exchange of Thailand of East Coast Furnitech Public Company Limited on the resolutions of

., and Schedule for the EGM of Shareholders No. 1/2019 To: The President The Stock Exchange of Thailand Enclosure: 1. Information Memorandum of Hydrotek Public Company Limited on Disposal of Assets and

., and Schedule for the EGM of Shareholders No. 1/2019 (Revised) To: The President The Stock Exchange of Thailand Enclosure: 1. Information Memorandum of Hydrotek Public Company Limited on Disposal of

., and Schedule for the EGM of Shareholders No. 1/2019 (Revised2) To: The President The Stock Exchange of Thailand Enclosure: 1. Information Memorandum of Hydrotek Public Company Limited on Disposal of

., and Schedule for the EGM of Shareholders No. 1/2019 (Revised3) To: The President The Stock Exchange of Thailand Enclosure: 1. Information Memorandum of Hydrotek Public Company Limited on Disposal of

3344 Fax. 66 2 654 3323 No. PACE IR2018/010 Date: 28 February 2018 Subject: Explanation of the Operating Results for the year ended 31 December 2017 changing over 20% To: The President The Stock Exchange

- Translation - Page 1 of 6 CBG 006/2020 20 February 2020 Subject Management discussions and analysis for the fiscal year ended 31 December 2019 To President The Stock Exchange of Thailand We

Exchange Commission (SEC). An English version of the MD&A has been prepared from the Thai version. In the event of a conflict or a difference in interpretation between the two languages, the Thai version

คำอธิบายและการวิเคราะห์ของฝ่ายจัดการ 20 February 2018 Re: To clarify the financial statements as of 31 December 2017 To: President The Stock Exchange of Thailand WHA Corporation Public Company