VIENTAINE, LAO P.D.R. - AUGUST 25 : Shoppers visit duty free shop at Thai-Lao border on August 25, 2013 in Vientaine, Lao P.D.R. Shutterstock Image - VIENTAINE, LAO P.D.R. - AUGUST 25 : Shoppers visit duty free shop at Thai-Lao border on August 25, 2013 in Vientaine, Lao P.D.R. - ID: 166873889