The Cradle to Cradle Certified Product Standard is the primary governing document of the Cradle to Cradle Certified® Products Program.
The Cradle to Cradle Certified Product Standard is supplemented by a number of reference documents, available on the Cradle to Cradle Certified Resources page.
Version 4.0 was published 16 March 2021 and goes into effect 1 July 2021. Previous drafts, track changes, and public comment responses can be accessed here.
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