Currently there are only around 500 type 99 of all variant and likely less than a thousand will be build.
The type 96 while less advanced is the primary main battle tank of the PLA with 1,500 to 2,500 of all variants in service and is still being produced.
The type 96G has thermal sights shared by the commander and gunner while all three crew have night vision. The commander can target for the gunner, giving the type 96G hunter killer capabilities.
The main gun of the type 96G is the same as the type 99G capable of firing depleted uranium APFDS and AT 11 missiles.
The armor is thinner but its just as advanced as the type 99 armor.
Its also air transportable.