It takes a long time to choose insurance, and it has a long history. There are many small institutions that will enter the business after 2020, which is very unreliable. They leave with more money and have no after-sales service. So everyone must see whether the circle of friends of this institution has just started for a few months or has been for several years. And it is best to find an offline entity company registered in the industrial and commercial bureau.

Choose physical security, the so-called physical security, is not to use software plug-ins, and then use pure external devices, not connected to the computer. Split-screen mode is also not desirable, because it relies on data lines to link computers to transmit traffic, and it will also be detected by the background.