Qualitech Public Company Limited informed the resolutions of the Board of Directors' Meeting No.11/2023 held on December 28, 2023 are as follows: To acknowledge the resignation of Mr. Somkiat Aramruangkul from the position of Chief Executive Officer. The resignation is effective from December 31, 2023 onwards; To appoint Mr. Wallop Luangseenak to be the Chief Executive Officer. The effective is January 1, 2024 onwards.