Need some help regarding the WS-9 / Quinling ?!!!

Can anyone help me out with some specific details on the WS-9 and esp. the Quinling !

As far as I know is the WS-9 a licensed “copy” of the original Rolls-Royce RB.168 Mk.202 Spey obtained during the mid to late 1970s to power the JH-7and replace their originally planned WS-6.

For the JH-7A later an improved version called Quinling – and strangely not called WS-9A – was developed. Certification was granted in July 2003 and production is running since 2004. It was officially confirmed in a TV-report in January 2008.

What I need is:
1. Has anyone some additional technical data like thrust, weight, … for both engines ?
2. Are there any information about the technical changes made from WS-9 to Quinling ?
3. Are there some more dates to add into the timeline esp. for the Quinling ?

Thanks a lot in advance,

Deino