Congratulations to Nguyễn Thế Thanh Tùng (@ryanthanhtung) on becoming an ISSA Certified #MasterTrainer! Welcome to the family! ????Tag us in your picture and use #ISSAcertified for a chance to be featured!???? . . . #issaonline #ISSA #issacft #issaperson
by issaonline 7 years ago | via Instagram