"We think 10 further multinationals in R&D is a good goal to have and if we do that it will have a significant impact in terms of New Zealand's overall R&D ecosystem."
It was difficult to put a figure on how much those 10 companies could invest, Joyce added.
He said foreign direct investment was crucial to the goals of the Business Growth Agenda and the Government was working to provide more resources to the Overseas Investment Office to improve its efficiency.
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"We have 4.5 million people on this waka and if we want to make our farmers, our manufacturers and our companies more successful then we have to get them more access to the world," Joyce said. "Welcoming investment occurring here will ensure more of it takes place in this geography than offshore."
He defended the Government's decision to decline Chinese firm Shanghai Pengxin's $88 million bid to buy Lochinver Station, near Taupo, saying it was simply an application of policies rather than a change of policy.
"Ministers and NZTE have had a chance to talk to investors and make it clear that it's not a change of policy," Joyce said. "It's certainly not a change of policy in relation to Chinese investment - it's simply an application of the existing rules."
A Shanghai Pengxin-controlled firm, Dakang New Zealand Farm Group, said this week that the Lochinver experience had contributed to its decision to pull out of a $42.7 million deal to buy a cluster of farms in Northland.