The Minister for Trade, Industry and Commerce was speaking at the official launching of the PMIZ project this afternoon.
The launching at the project site at Vidar in Madang Province was witnessed by more than 2000 people.
Maru added that he was tempted to move the project to another province after four years of delay.
The delay was a result of court action instigated by landowners in the impacted areas.
"This project is the catalyst for development in Madang," Maru said.