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In this technical document, we answered the question “What harmful particles can masks filter?” with COVID-19 filtering options and filtering after COVID-19.

To get this informative technical document, all you need to do is to complete the form on this page. With several clicks, you will get the information you have always wanted.

EU law requires that after CE-labeled products are available in the European market, their technical files must be stored in the EU for inspection by supervisory agencies at any time. Technical documents should also be updated on time if the content changes.

A technical file or technical document is a set of documents that contains all relevant information about a specific product, including information about the following products:


The main purpose of the technical file is to prove that the product complies with the applicable health and safety EU directives. Before manufacturers can paste the CE mark on their products, they must prepare a technical document proving that their products comply with relevant EU safety standards.

What documents must be included in the technical file?

The required content of the technical file is determined by the regulations that the product must comply with. From the type of document to the information contained, each EU directive has its own set of requirements for technical documents.