Exclusive: Vingroup unit eyes stake in mobile device retailer Vien Thong A Quynh Nguyen January 26, 2018 PremiumVinPro, the electronics retail arm of Vietnamese conglomerate Vingroup, is mulling an investment into mobile device retailer Vien Thong A, this portal has learnt. Continue reading this story with a subscription to DealStreetAsia. Subscribe Already a subscriber? Log in Should your colleagues be reading this article too? Contact us for corporate subscriptions at firstname.lastname@example.org.