De or het ketenhandhaving?

The correct Dutch article is:

de ketenhandhaving

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

How to use ketenhandhaving

the ketenhandhavingde ketenhandhaving
this ketenhandhavingdeze ketenhandhaving
that ketenhandhavingdie ketenhandhaving
our ketenhandhavingonze ketenhandhaving
your ketenhandhavingjouw ketenhandhaving
every ketenhandhavingelke ketenhandhaving
which ketenhandhaving?welke ketenhandhaving?
a big ketenhandhaving / the big ketenhandhavingeen grote ketenhandhaving, de grote ketenhandhaving