Opposing business views on EU exit from Wales
23 February 2016 Last updated at 17:19 GMT
Companies employing 14,000 people in Wales are calling for the UK to remain part of the European Union.
Airbus, BT and Ford are among those who have told BBC Wales that jobs and growth will be better served by being in the EU.
It comes on the day almost 200 business people signed a letter to the Times supporting membership.
Three firms from Cardiff and Vale of Glamorgan have also signed the letter.
Paul Kahn - boss of Airbus UK, which has a wings factory in Flintshire - explained why he signed the letter. Meanwhile, Ken Beswick - a former UKIP election candidate and managing director of Promocorp in Cwmbran - said more top business people wanted to leave the EU.