No, as we have already seen, several EU based manufacturers are already teaming up with Ukraine.
Rebuilding Ukraine's infrastructure will be a joint effort via the EU, UK and U.S. - bridges, buildings, dams, power grid, roads and so on are going to be a priority.
This means companies will be on the list to bid for contracts and again, what has China offered Ukraine that the above mentioned has not?
The short answer is absolutely zero.
We can see clearly that Ukraine is not stupid, they know who their friends and allies are. This would hold true in war as in peace and I can be fairly sure that when this war is over and China approaches Ukraine with all sorts of deals and concessions, their answer will be the same as Ukraine gave Russia in the opening days of the war:
"Chinese ship, go f**k yourself"