Tags Discover® Financial Services NAPAS and BIDV partnership launches DFS acceptance services Wednesday, Dec 22, 2021 Cardholders with global payments brand Discover® Financial Services (DFS) will have more options to make payments at merchants throughout Viet Nam. NAPAS collaborates with DFS in card switching Friday, Dec 22, 2017 The National Payment Corporation of Viet Nam (NAPAS) and Discover Financial Services Inc (DFS), an American financial services company, signed an agreement on a card switching system on Wednesday in Ha Noi.