three -month period ended June 30, 2020 Attention: President The Stock Exchange of Thailand Further to our submission of the report and the financial statements for the six-month period ended June 30

May 12, 2018 Subject: Clarification of Operating Results for The three -month period ended March 31, 2018 Attention: President The Stock Exchange of Thailand Further to our submission of the report

three -month period ended March 31, 2020 Attention: President The Stock Exchange of Thailand Further to our submission of the report and the financial statements for the three-month period ended March 31

the three month period ended September 30, 2017 operating results. To Director and Manager of the Stock Exchange of Thailand Referring to the submission of the reviewed financial statements for quarter

for the three-month period ended March 31, 2019 To: Director and Manager of the Stock Exchange of Thailand Referring to the submission of the reviewed financial statements for quarter 1/2019 of Wiik

analysis for the three-month period ended June 30, 2019 To: Director and Manager of the Stock Exchange of Thailand Referring to the submission of reviewed financial statements for quarter 2/2019 of Wiik

and analysis for the period ended March 31, 2018 To Director and Manager of the Stock Exchange of Thailand Referring to the submission of the reviewed financial statements for quarter 1/2018 of Wiik

: Management discussion and analysis for the period three-month ended September 30, 2018 To Director and Manager of the Stock Exchange of Thailand Referring to the submission of the reviewed financial statements

analysis for the three-month period ended September 30, 2019 To: Director and Manager of the Stock Exchange of Thailand Referring to the submission of reviewed financial statements for quarter 3/2019 of Wiik

: Clarification for the three month period ended June 30, 2017 operating results. To Director and Manager of the Stock Exchange of Thailand Referring to the submission of the reviewed financial statements for