No. OrThor/Nor. 5/2547 Re: Operational Control and Security of the Information Technology of Securities Company For the purpose of rendering the securities companies to efficiently comply with the

: Operational Control and Security of the Information Technology of Securities Company For the purpose of rendering the securities companies to efficiently comply with the Notification of the Office of Securities

entity or natural person, as well as the nature of such control. To the extent known to the issuer, indicate whether the issuer is directly or indirectly owned or controlled by another corporation, by any

characteristics or any characteristics indicating a lack of appropriateness to be relied on to manage a company whose shares are publicly held in accordance with the relevant laws on securities and exchange or the

29 percent of shares of NYKT (“NYKT Shares”) from Artlion Development Limited (“ArtLion”) which is a subsidiary of and under the control of NYK Group. The purchase of NYKT Shares is regarded as a

are clearly defined in conformity with the good internal control principle. We also emphasize thorough, accurate and regular disclosures on risk, capital and liquidity management to the public. 3

person, as well as the nature of such control. To the extent known to the issuer, indicate whether the issuer is directly or indirectly owned or controlled by another corporation, by any foreign government

intermediary shall have measures for correctness [of fault action], control [of impact] and punishment [for wrongdoing] in proportion to the seriousness of their actions. Clause 9 In case the association

to an inventory gain of THB 856 million. However, there was a loss from crude and product oil price hedging contract at THB 75 million. Furthermore, the refinery planned to manage the stocks of

million or 2% from Q1/2020 • However, EBITDA margin in Q1/2021 was 31.5%, increased by 5.1% from Q1/2020 as a result of the effective control of selling and administrative expenses under the implementation