New Zealand Steel wants the High Court to overturn a decision by the government not to tax Chinese steel imports, which the firm says flooded the local market and cut into profits.
In July 2017, then-Commerce and Consumer Affairs Minister Jacqui Dean decided not to impose countervailing duties on imports of galvanised steel coil from China, following an investigation by the Ministry of Business, Innovation and Employment which found that Chinese subsidies on the steel were too small to have injured the domestic industry.
NZ Steel, which is a wholly-owned subsidiary of Australia's Bluescope Steel, lodged an application for judicial review of the former minister's decision in September 2017.
Today, NZ Steel's lawyer Jack Hodder QC told the Wellington High Court that the heart of the application was whether the ministry had "effectively superseded material that was available to it from previous investigations".
Reputable overseas regulators have found that China has subsidised and dumped steel, Hodder said, meaning the New Zealand government's decision is "deviation from the findings of other jurisdictions".