A more thorough explanation:

ex industria

Ex industria means that something was done on purpose or with careful planning.

• He didn't accidentally break the vase, he did it ex industria to get back at his sister.
• The company's decision to lay off workers was ex industria to cut costs.

These examples show that the actions were not accidental or random, but were done with a specific intention or plan in mind. In the first example, the boy intentionally broke the vase to get revenge on his sister. In the second example, the company made a deliberate decision to lay off workers in order to save money. Both actions were done ex industria.