I know this will sound odd but which Tantrick % would I use on a chinese lady that I have booked in on thursday.

i do 2 chinese ladies and made the mistake the first time using a 12% which didnt notice I then tried an 8 % and they looked a lovely colour i seem to find with different nationalities i need to lower my percentage rather than higher it for some reason

I would agree...try the 8% first and see how you go.
The main advantage of spray tanning Chinese ladies is that there so petite you only use about half the solution compared to when spray tanning Europeans LOL

Thanks for the replies. It was a great help. I used the 8% and my lady was very happy with the result.