Die Firma Your Mask brauchte sieben Monate von der Gründung bis zur Massenproduktion: FFP2-Masken made in Reinickendorf - Reinickendorf
Experimental and Simulation Studies on Nonwoven Polypropylene–Nitrile Rubber Blend: Recycling of Medical Face Masks to an Engineering Product | ACS Omega
FFP2 pandemic fold-flat mask | Protection against particulate | Respiratory protection | Occupational Safety and Personal Protection | Labware | Carl Roth - International
Personalized Reusable Face Masks with Smart Nano‐Assisted Destruction of Pathogens for COVID‐19: A Visionary Road - De Sio - 2021 - Chemistry – A European Journal - Wiley Online Library