papilio, 
hi, I just re-discovered this helpful video about masking. guidance from engineer Aaron Collins.
https://www.youtube.com/watch?v=s3-Hf6wnPds
me, I wear the Aura 9210+
https://www.3m.com/3M/en_US/p/d/v101348002/
papilio, hi, I just re-discovered this helpful video about masking. guidance from engineer Aaron Collins.
https://www.youtube.com/watch?v=s3-Hf6wnPds
me, I wear the Aura 9210+
https://www.3m.com/3M/en_US/p/d/v101348002/
Add comment