Booking e tickets with Chinese online company

Q: I have been using Ctrip for my bookings. However they do not have access to the flights I recently enquired about. I have found a site that does - Travel China Do you know this site and are they reliable? Thank you once again.

Travelchinaguide has been in operation for some time. It is a joint venture of Xian Diamond Network Co. Ltd and China Xian Marco Polo International Travel Service. We can find two business licenses that they provide, here and here, issued by the Xian Bureau of Industry and Commerce Administration. The first document indicates that Xian Diamond Network Co. Ltd was established in 2001. Its business registration number is 6101032112342 and its field of operation is web design, conference services, etc. The second document shows that Xian Marco Polo International Travel Service was created in 2006, with a business registration number 6100002081568. It has the permission to serve tourists, both Chinese and foreign; the permission to serve foreign tourists has an expiration date of May 31, 2009. Both of the two companies are located at No. 48 Middle Hanguang Road, Xian. The head of both companies is Mr. Wang Yuejin.