New Zealand Prime Minister Jacinda Ardern on Tuesday confirmed the signing of an expanded trade deal with China, noting its significance amid the pandemic.
The agreement comes as Beijing seeks to establish itself as a strong advocate of multilateralism, following a bruising trade war with the United States and as the Coronavirus keeps international borders closed.
"China remains one of our most important trade partners ... For this to take place during the global economic crisis bought about by COVID-19 makes it particularly important," Ardern said at a news conference.
The agreement expands an existing trade deal with China and ensures it remains fit for purpose for another decade, New Zealand trade minister Damien O'Connor said in a statement.
Under the new deal, tariffs for many of New Zealand's mostly commodities-based exports, which include dairy, timber and seafood, will be either removed or cut. Compliance costs will also be reduced.
The trade pact with New Zealand comes as Beijing's ties with neighbouring Australia worsened after Canberra called for an independent investigation into the origins of the Coronavirus pandemic, which was first reported in central China.
Australia has appealed to the World Trade Organisation to review China's decision to impose hefty tariffs on imports of Australian barley.
New Zealand, which will host the regional Asia Pacific Economic Cooperation summit this year, has said it would be willing to help negotiate a truce between China and Australia.
Following years of pressure from the Trump administration over trade and, more recently, international scrutiny over the handling of the Coronavirus, China has emerged as a surprising champion of globalisation and multilateralism.
In recent months, Beijing signed an investment pact with the European Union and joined the world's largest free trade bloc in the 15-country Regional Comprehensive Economic Partnership (RCEP), which also includes New Zealand.
China has also expressed interest in joining the Comprehensive and Progressive Trans-Pacific Partnership (CPTPP) Agreement, the successor to an earlier pact from which Washington withdrew.
Under its new deal with Wellington, China will also open up sectors such as aviation, education and finance. In exchange, New Zealand will increase visa quotas for Chinese language teachers and tour guides, China's official Xinhua news agency reported on Tuesday.
New Zealand was the first developed country to sign a free trade agreement with China in 2008, and has long been touted by Beijing as an exemplar of Western engagement.
China is now New Zealand's largest trading partner, with annual two-way trade of over NZ$32 billion ($A29.84 billion).
But ties have been tested under Ardern's government as New Zealand criticised China's influence on small Pacific islands and raised human rights concerns about Muslim Uighurs.
Ardern also backed Taiwan's participation at the World Health Organisation (WHO) despite a warning from Beijing.