3G wireless Internet access. For futures trading, it mainly depends on what kind of trading you do. If you do day trading, the band is ok. It is not recommended to use fried list, which is not stable. My speed here is around 190KB/s, and occasionally the market will stagnate. I suggest you know the number of base stations of related operators around your low point first. There are many base stations near you, such as Telecom, China Unicom and Mobile, and the signal is better, so you can give priority. In addition, in terms of tariffs, telecommunications is charged by time, while China Unicom and China Mobile are charged by traffic, which may be much more expensive than telecommunications. But because telecommunications is charged by time, if someone around you uses telecommunications and you use it, and he downloads things with 3G, you may get stuck, because he occupies a lot of air spectrum resources. It can be said that each has its own merits. I suggest you consult operators and some professionals. If it is used, it is recommended that the wireless network card buy an external antenna, which may be about 150 more expensive than the built-in antenna, but the signal is better.