PTT (Lao) also held a Big Cleaning Day on March 20, 2020. PTT (Lao) staff worked together to clean the PTT (Lao) headquarters and the area around the office to keep it clean and tidy to prevent the spread of COVID-19 virus. 


ບໍ່ອະນຸຍາດໃຫ້ສະແດງຄຳເຫັນ.