They arrived in Wanganui last Tuesday and have taken part in puanga/matariki celebrations at Putiki, been hosted at a mayoral dinner and visited the Waiouru Army museum.
On Friday, the visitors met the Whanganui Employers Chamber of Commerce and Mrs Tolerton said it was a very positive meeting.
"We look after tourism in Lisburn, so we've brought a lot of that sort of material with us. The chamber was very interested in what we had. They said they will meet and look at some of the ideas we flagged.
"We have invited them to visit us later in the year, and we can introduce them to our economic development department and show them what Lisburn has to offer."
She said although the treaty of friendship was signed in 1994, "nothing has ever come of that. It's been sitting dormant."
"We're a successful council and the second biggest in Northern Ireland. Belfast is the only one bigger than us. And we have a very strong economic development department, and through that we've developed strong trade links around the world.
"Why shouldn't we be trying to generate the same thing with Wanganui?"
Councillor Pat Catney said anything their council could do to create an "economy corridor" between Wanganui and Lisburn, his council would been keen to help with.
On Friday afternoon, Mrs Tolerton and the delegation laid wreaths at the monument at the base of the Veterans' Steps. The Queen's Park memorial commemorates 138 imperial and colonial troops who died in and around Wanganui during the New Zealand Wars, and another 18 veterans who died long after the wars ended.
The Lisburn party flew home on Saturday.