De or het prijsdumping?

The correct Dutch article is:

de prijsdumping

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

How to use prijsdumping

the prijsdumpingde prijsdumping
this prijsdumpingdeze prijsdumping
that prijsdumpingdie prijsdumping
our prijsdumpingonze prijsdumping
your prijsdumpingjouw prijsdumping
every prijsdumpingelke prijsdumping
which prijsdumping?welke prijsdumping?
a big prijsdumping / the big prijsdumpingeen grote prijsdumping, de grote prijsdumping