Модель указана на борту - AD-20T. Чем она от просто AD-20 отличается? В базе есть AD-20T, у которых модель установки указана как AD-20

Differences between ČKD AD-20 and this crane:
- outriggers are different
- crane boom is different
- cabine is also different
- this model seems to have its own engine, the counterweight of original AD-20 is different (much smaller)

So it is possible that this crane has a load capacity of 20 tons, but this is not a ČKD AD-20.