Yes, that's correct, as you have stated "has already led to two...

Yes, that's correct, as you have stated
"has already led to two major trial invitations onlakes and catchments projects elsewhere in China. These projects are potentially much largerthan the southern China project. Planning for these trials is underway, with applicationsexpected to commence in the next three months"
they haven't been settled and signed.

If you are a company trying to get someone to sign on the dot, would you announce it in the market so that everyone know about it and competitors come knocking on the door and trying to lower the contract cost? Nope.

They will announce in due course when it is signed and dusted. Plain and simple. You will just need to be patience until then.