It's really unnecessary. Securities companies generally have multiple servers of Unicom and Telecom, and generally choose the fastest server to log in according to your IP address, so customers don't have to choose their own lines.

It's really a piece of cake to watch a disk in 4M broadband, unless you use some high-speed full-push market software to watch the 1 minute K-line chart, or ultra-short and ultra-short futures.