The phrase "a key partner for" is correct and usable in written English.
It can be used to describe someone or something that plays a crucial role in a partnership or collaboration.
Example: "Our organization aims to be a key partner for local businesses in promoting sustainable practices."
Alternatives: "an essential collaborator for" or "a vital ally for".
EU officials – Donald Tusk, Jean-Claude Juncker and Federica Mogherini – issued a statement supporting the Turkish government: Turkey is a key partner for the European Union.
In a similarly supportive statement, the EU's three top officials – Jean-Claude Juncker, Federica Mogherini and Donald Tusk – said: "Turkey is a key partner for the European Union.
Donald Tusk, president of the European council, said the country was "a key partner for the European Union" and called for a "swift return to Turkey's constitutional order".
The US president's visit to Hanoi has a clear subtext: Vietnam is a key partner for the Trans Pacific Partnership TPPP), a trade deal, divisive at home, that is designed to counter China's growing regional influence.
At that time, ILSI described itself as a "key partner for European industry", but it now says that it is a non-profit guided by scientific and environmental concerns and that it does not lobby or make policy recommendations.
Seeing in Mauritania a key partner for their own counterterrorism efforts, France and the United States have provided it with logistics, training, equipment and intelligence, according to Western and Mauritanian security sources in Nouakchott.
Such attacks are unacceptable and indefensible Today, 29 drivers with World Food Programme contract trucking partners and four others working with the State Water Corporation, a key partner of UNICEF, remain unaccounted for having been abducted at gunpoint in separate incidents.
CBS Interactive is also a key partner to CBS Television Network for major broadcast events.
In 2012, BitNami emerged as a key partner with AWS for the launch of its new marketplace.
Founded by Stella Márquez Araneta, BPCI has been a key partner in nation-building for over four decades.
UNICEF is also a key partner in the Education for All Fast-Track Initiative launched by the World Bank and supported by many bilateral donors, to help mobilize resources toward the Education Goal.
