US IT firm Seagate Technology is creating 300 new jobs in Northern Ireland in its Springtown and Limavady plants.
The expansion will see £83m being invested in the two plants, and Springtown will become Seagate's main global manufacturing facility.
Seagate, which has been using nanotechnology to make hard-disk products in Northern Ireland since 1993, already employs nearly 2,000 people there.