UNE-CEN/TS 17553:2022 Textiles and textile products - Community face coverings - Minimum requirements, methods of testing and use (Endorsed by Asociación Española de Normalización in January of 2023.)
2023UNE-CEN/TS 17553:2022 Textiles and textile products - Community face coverings - Minimum requirements, methods of testing and use (Endorsed by Asociación Española de Normalización in January of 2023.)