The URL is letsvpn dot world.
From what I can tell:

• It's developed by Chinese people (not sure if they are located in China or outside of China)
• It's specific for China unlike other products. It uses the latest technologies, unlike other providers that claim their service works in China with no specific tech.
• There's a bunch of interesting stuff, like alternate URLs for downloading the client and redirects to download the client from open source software websites like Github.
• There is a page that tells you what to do if you have the Chinese mainland App Store (switch it to HK or other alternatives). Similar to what YariGuy was talking about above.
• Reviews online seem positive about connection and speed, but the downside is number of servers.
• It is cheap, $53/12 months, $15/3 months, $6/month, $3/week

The downside is that (I think) the developers are anonymous so you basically have no guarantees of data privacy.
As stated above I haven't actually used the product in China yet, so withholding judgment.