1 Ref: AC.042/2017 14 November 2017 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

, driven mainly by exports sector, private consumption, government spending and investment. In the fourth quarter, Thai economic growth is expected to be driven by government initiatives such as Low-income

1 Ref: AC.004/2018 26 February 2018 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

management for the year 2017 To: President Stock Exchange of Thailand The Company would like to clarify the following reasons for changes to profit (loss) in the consolidated financial statements for the year

(Translation) May 15, 2019 Ref: SET-2019-008 Re: Management Discussion and Analysis for Quarter 1’ 2019 Attn. to: President The Stock Exchange of Thailand Filter Vision Public Company Limited and its

-1 1 Ref. LPN/SorKor/053/2563 13rd February 2020 RE: Financial Statements Analysis Report 2019 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co., Ltd. would like to submit

the 16th of January 2020 onwards. March The Thai Government declared an Emergency Situation in all areas of the Kingdom of Thailand due to the outbreak of the COVID-19. Management outlook and future

-1- AIT (VP-SEC) 028E/2022 November 10, 2022 Subject: Management's Discussion and Analysis of Operating Results for Q3-2022 To: The President of the Stock Exchange of Thailand Summary of Operations

., 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