The Board of Directors' Meeting of TPCS Public Company Limited held on 20 December 2023 passed resolutions on the following matters: Appoint Mr. Suchai Narongkananukul as Chairman of the Board of Directors, effective from 20 December 2023 onwards. Appoint Mr. Koravit Narongkananukul as Managing Director, effective from 20 December 2023 onwards. Appoint Mr. Manu Leelanuwatana as an Advisor to the Board of Directors, effective from 20 December 2023 onwards.

Appoint Miss Natthakan Thanawadee as Director to replace the vacant director position. His term is equal to the remaining term of the resigned director, effective from 20 December 2023 onwards. Therefore, the Board of Directors consists of 11 persons as follow: Mr. Suchai Narongkananukul- Chairman; Mr. Koravit Narongkananukul- Managing Director; Mr. Arnut Rattanapathimakorn- Deputy Managing Director; Mr. Somnuek Thungpukdee, Miss.

Rachanee Luevipasakul, Miss. Sirikul Dhanasarnsilp and Miss Natthakan Thanawadee as Directors; Mr. Padoong Techasarintr, Dr. Utid Tamwatin, Assoc. Prof. Dr. Supachet Chansarn and Mr. Nattavudh Pungcharoenpong- Independent Directors.

Sub-Committee: The Audit Committee, remains the same, as follows: Mr. Padoong Techasarintr- Chairman; Dr. Utid Tamwatin, Assoc. Prof. Dr. Supachet Chansarn and Mr. Nattavudh Pungcharoenpong as members. The Nomination Committee: Mr. Suchai Narongkananukul- Chairman; Mr. Boonsithi Chokwatana, Dr. Utid Tamwatin and Mr. Koravit Narongkananukul as members; The Remuneration Committee: Miss.

Sirikul Dhanasarnsilp- Chairman; Mr. Padoong Techasarintr, Mr. Arnut Rattanapathimakorn and Dr. Utid Tamwatin as members. The Corporate Governance and Sustainability and Risk Management Committee: Mr. Padoong Techasarintr- Chairman; Mr. Arnut Rattanapathimakorn, Mr. Somnuek Thungpukdee, Dr. Utid Tamwatin and Mr. Nattavudh Pungcharoenpon as members. The Executive Board, as follows: Mr. Suchai Narongkananukul- Chairman; Mr. Koravit Narongkananukul, Mr. Arnut Rattanapathimakorn, Mr. Somnuek Thungpukdee, Miss Rachanee Luevipasakul, Miss Darunee Supo and Mrs. Suwanee Naipongprasit as Executive Directors.