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Certification scheme NEN biobased% (edition 11/2016):
Certification scheme OK biodegradable MARINE (edition 01/04/2019):
Use of the OK compost & OK compost HOME logo: Answers to frequently asked questions about permission to use and the specifications for OK compost and OK compost HOME logos (document 25):
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FAQ Seedling vs OK compost: Answers to questions regarding the Seedling registration/certification of products that are already OK compost certified and vice versa (document 32):
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