A man has admitted to selling purportedly high-quality Australian building products when they were in fact sourced elsewhere.
Three other men have pleaded not guilty to similar accusations.
Darryl Campbell was one of four men charged by the Commerce Commission after it received a complaint that the men had allegedly sold an autoclaved aerated concrete product claiming to be made by Australian company Hebel.
The concrete, which is used for building walls, floors and buildings, was actually made by other companies, some if not all of them based in China.
The lawyer representing all four men, Rob Latton, said it was claimed that they had started using the alternative products from 2007 when their supplier was unable to provide a particular thickness of Hebel panel.