De or het productactivering?

The correct Dutch article is:

de productactivering

Rule Words ending in -ing: almost always de. See the rule

How to use productactivering

the productactiveringde productactivering
this productactiveringdeze productactivering
that productactiveringdie productactivering
our productactiveringonze productactivering
your productactiveringjouw productactivering
every productactiveringelke productactivering
which productactivering?welke productactivering?
a big productactivering / the big productactiveringeen grote productactivering, de grote productactivering