what kind of app do i need to add two currencies on products pricing and importing. i sell different products with different currency. i have china, thailand , Singapore many products. i want to add different products to different price currency. example for thailand products i want to pricing in thailand currency (BAHT). for china i want import pricing in china currency. i want to import these products pricing without changing country location . all products checkout currency must be in one currency. how to i do that.