Thanks. I know the distributor in Vietnam though. He has a page made specifically to communicate with Anker community in Vietnam. He said some of the new products on amazon is actually experiment products and Anker does not allow him to order it (and he also don't want to order it as he want to avoid as much warranty claim as possible). Anyway, if the Dura line come to Vietnam it will have 15 months warranty as the rest of the products distributed in Vietnam.