Smart Concrete Public Company Limited, at its board meeting held on June 2, 2021, appointed Artit Teeparkornsukkasem to be the Chairman of the Board of Directors, which would be effective as of June 2, 2021 onwards; appointed Rungsee Teepakronsukasam to be the Vice Chairman of the Board of Directors, which would be effective as of June 2, 2021 onwards; and appointed Mr. Rungsee Teepakronsukasam to be the President of Executive's Committee which would be effective as of June 2, 2021 onwards.