Duong Hieu Trading and Mining Joint Stock Company announced the change in personnel as follows: Appointment: Mrs. Ma Thi Thu Huong as head of the supervisory board, effective December 6, 2022; Mrs. Nguyen Thi Yen as member of the Supervisory Board, effective December 6, 2022. Resignation: Mrs. Tran Thi Quynh and Mrs. Le Thi Mai Anh as member of the Supervisory Board, effective December 06, 2022.