Tweet from PennNETS
RT @vijay_r_kumar: DIY Origami mask: performance comparable to N95 masks, conformal to face, and easy to make: Innovation by @pennengineer… April 10, 2020, 8:35 pm
RT @vijay_r_kumar: DIY Origami mask: performance comparable to N95 masks, conformal to face, and easy to make: Innovation by @pennengineer… April 10, 2020, 8:35 pm
