You always need to fill in the proportion of circulated material in your article if you report information under the criteria area Health & environmental hazard or Circularity.
Even if your article does not contain any circulated material, you must fill in 0 in the column for "C1.1b: Share of circular material".
For articles containing circulated material, you must enter information about the materials in question in addition to the ingoing percentage of the material. You enter this information in the tab "Add circulated materials", for all articles that do not contain any circulated material, this tab is left empty.
If you have questions about this, go to the following FAQ:
Why are article numbers not included in the "Add chemical substances" and "Add circulated materials" tabs?
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