¿Qué significa "certification agency's NGOs" (Context to follow) ?

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A non-governmental organization (NGO) is a non-profit group that functions independently of any government. NGOs, sometimes called civil societies, are organized on community, national and international levels to serve a social or political goal such as humanitarian causes or the environment. I did some research on accredited organizations and found the majority of them are NGOs. So having read her paragraph below combined with the little reading that I've done, that yes, you're correct: "The agency who certifies cacao beans (as ethical or fair trade) are also NGOs themselves."

WENDY WOODS stated that: "Mars partnered with NGOs around the world that are working with small shareholder farmers. And those certification agency's NGOs are working to help farmers improve crop yields, they're making sure that they get a fair, premium, livable wage and they're helping them address any human rights potential issues in supply chains, and they're helping minimize the effects on the environment, like deforestation etc."