Exhibitors at the National Agricultural Fieldays at Mystery Creek are reporting extremely strong sales.
Visitor numbers to the site outside Hamilton are up on last year, with almost 33,000 people through the gates on Thursday, the second day.
Exhibitors say that, with their improved returns from dairying, meat and wool, farmers are coming to the Fieldays ready to buy.
The Fieldays manager for the farm technology company Gallagher's, Mathew Macfie, says the opening day was a record first day for the company, and the second day was the biggest single day ever in its 26 years of attendance.
Mr Macfie says farmers are looking to the future and investing in high-end technology this year.
Another exhibitor, the machinery specialist Powerfarming, says it has sold some some big items, including tractors.
The four-day event finishes on Saturday.