Founded in 1986, it is the first listed network company in Taiwan, and has won the "2014 Taiwan Top 20 International Brands" award and the 2014 CES "Innovative Design and Engineering Award". Although there are not many portable router styles of Youxun, 3G/4G wireless routers and ordinary routers are involved, the models are DIR-503, DIR-508L and DIR-510L, and the price ranges from 68 yuan to 499 yuan. The signal of the Unicom router is fast and stable, and the router is equipped with SD card and USB dual storage space, which can share files easily and quickly. Among them, the DIR-510L portable router is a 2.4G/5G dual-band signal, 802.11ac wireless standard, which has a higher transmission speed than the common 802.11n standard, but it is not as convenient as the other two to buy, and it is more recommended for consumers with higher requirements for network speed to buy.