-1 1 Ref. LPN/SorKor/119/2563 7th May 2020 Re: Financial Statements Analysis Report Q1/2020 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co.,Ltd. would like to submit the

-1 1 Ref. LPN/SorKor/098/2564 6th May 2021 Re: Financial Statements Analysis Report Q1/2021 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co.,Ltd. would like to submit the

-1 - Translation - Ref. LPN/SorKor/386/2562 7th November 2019 Re: Consolidated Financial Statements Analysis Q3/2019 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co., Ltd

and the relevant risk exposure. The effectiveness of this registration statement neither represents that the Ministry of Finance of Thailand, the Securities and Exchange Commission or the Office of the

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

responsibility for its accuracy, nor be held liable for any loss or damages arising from or related to its use. Notification of the Office of the Securities and Exchange Commission No. SorThor/Nor. 26/2549 Re

Transactions Deemed as Acquisition or Disposal of Assets, dated August 31, 2008 (as amended) and the Notification of the Board of Governors of the Stock Exchange of Thailand regarding Disclosure of Information

President The Stock Exchange of Thailand Capital Engineering Network Public Company Limited (“the company” or “CEN”) hereby noticed that resolution from Board of Directors No.4/2020 held on August 14, 2020

., 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