The Siam Cement Public Company Limited announces that the Board of Directors has appointed the following SCG Executives, with the effective date of May 1, 2024. Mr. Mongkol Hengrojanasophon, current position: Chief Operations Officer, Executive Vice President - Olefins Chain, (Thailand), SCG Chemicals to New position: Chief Operations Officer, SCG Chemicals. Mr. Suracha Udomsak from current position of Chief Innovation Officer, - Executive Vice President - New Business, SCG Chemicals to New Position of Chief Innovation Officer, SCG Chemicals.

Mr. Kulachet Dharachandra from current position of -Executive Vice President - Olefins Chain (Vietnam), SCG Chemicals, - Country Director - Vietnam, SCG to new position of Executive Vice President, SCG Chemicals, General Director - Long Son Petrochemicals, Country Director - Vietnam, SCG. Mr. Chatri Eamsobhana from current position of Chief Financial Officer, SCG Chemicals to Chief Commercial Officer, SCG Chemicals. On May 1, 2024, Mr. Tanawong Areeratchakul' s employment contract will expire.