Taiwanese seedless kumquats are becoming popular in Vietnam due to their crunchy and sweet taste. They are being sold aggressively online at prices ranging from 40,000-80,000 VND per 0.5 kg box. The fruit is preferred for its health benefits in treating common ailments like sore throat and cough. However, consumer confidence in the fruit's origin is low, with concerns about it being mistaken for Chinese kumquats.