比特VPN（永久免费、无广告，专业级别的VPN软件）

优势一： 永久免费
提供永久免费线路，无需通过签到、看广告来获取流量，随时可用。
优势二： 无广告
没有烦人的广告，软件简洁，运行流畅。
优势三： 智能选择最优线路
全球部署有上百台服务器，能帮您智能选择最优、最快的服务器，同时您也可以手动链接指定服务器。
优势四： 隐秘安全
无需提供任何个人信息，免注册，一键链接。
优势五： VIP高速线路
独享3M带宽，保证在Youtube看720P高清视频，在帮助中心提供一对一客服。 One advantage: permanent free
      Provide permanent free line, without going through the sign, look at advertising to get traffic, readily available.
Two advantages: no ads
      No annoying ads, the software Jian Jie and runs smoothly.
Three advantages: smart to choose the best route
      There are hundreds of servers deployed globally, intelligent help you choose the best, fastest server, and you can also manually specify the server link.
Four advantages: covert security
      Without providing any personal information, free registration, a key link.
Five advantages: VIP high-speed lines
      3M exclusive bandwidth guarantee watch 720P HD video at Youtube, providing one on one customer service in the Help Center.