AC 52/07-003 ACC1/18-048 November 12, 2018 Subject: Management Discussion and Analysis Quarter 3 Ending September 30, 2018 To: Director and Managing Director The Stock Exchange of Thailand Qualitech

AC 52/07-003 ACC1/19-055 November 11, 2019 Subject: Management Discussion and Analysis Quarter 3 Ending September 30, 2019 To: Director and Managing Director The Stock Exchange of Thailand Qualitech

Facebook page S’Stock Day : Unlicensed securities and derivatives business (Disclosure Date : 24/03/2023)

TikTok account “betagro_stock_insights” impersonates “BETAGRO Plc.” : Unlicensed securities and derivatives business (Disclosure Date : 09/10/2024)

ACC1/18-042 6 September 2018 Subject : The Information of a Disposition of Assets of the Subsidiary (Revise) To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public Company

TikTok account "okj_stock_trade" impersonates "Pluk Phak Praw Rak Mae Plc." : Unlicensed securities and derivatives business (Disclosure Date : 20/03/2025)

TikTok account “stock_marketsawakami” impersonates “Sawakami Asset Management (Thailand) Co., Ltd.” : Unlicensed securities and derivatives business (Disclosure Date : 02/10/2024)

TikTok account “stock_online_” impersonates “HUA SENG HENG Co., Ltd.” : Unlicensed securities and derivatives business (Disclosure Date : 02/10/2024)

TikTok account “sawakamith_stock” impersonates “Sawakami Asset Management (Thailand) Co., Ltd.” : Unlicensed securities and derivatives business (Disclosure Date : 10/10/2024)

TikTok account “sawakami_stock_thailand” impersonates “Sawakami Asset Management (Thailand) Co., Ltd.” : Unlicensed securities and derivatives business (Disclosure Date : 30/08/2024)