., 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

สรุปผลการดำเนินงานของบจ -Translation- May 13, 2019 Subject: Management Discussion and Analysis for the Quarter 2/2019 To: Managing Director The Stock Exchange of Thailand Inoue Rubber (Thailand

สรุปผลการดำเนินงานของบจ -Translation- August 15th, 2017 Subject: Management Discussion and Analysis Quarter 3 Ending 30 Jun 2017 (Edited Template) To: Managing Director The Stock Exchange of Thailand

- Translation - 9 August 2018 Subject: Management’s Discussion and Analysis for the Operating Results of the Second Quarter of 2018 Attention: The President of the Stock Exchange of Thailand Exotic

. In this regard, the Company still uses the same stock symbol “RATCH”. 1.6 Establishment of Hin Kong Power Holding Company Limited and Hin Kong Power Company Limited On May 24, 2019, the Company has

- Translation - 10 November 2017 Subject: Management’s Discussion and Analysis for the Operating Results of the 3 rd Quarter of 2017 Attention: The President of the Stock Exchange of Thailand Exotic

คำอธิบายและการวิเคราะห์ของฝ่ายจัดการ 8 November 2019 Re: To clarify the financial statements as of 30 September 2019 To: President The Stock Exchange of Thailand As WHA Corporation Public Company

amended) and the Notification of the Board of Governors of the Stock Exchange of Thailand Re: Disclosure of Information and Other Acts of Listed Companies Concerning the Acquisition and Disposition 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

for the year ended December 31, 2019 To Director and Manager of the Stock Exchange of Thailand Referring to the submission of the audited financial statements of WIIK Public Company Limited “the Company