Cool to see more news from Mumbai. I've been following a close friend of mine (also in Mumbai) on various social media as he works on his goal of fabricating "100,000 M-19 Face Shields for India" in his maker space.

https://www.makersasylum.com/covid19/

Their open source face shield designs, which include different materials: https://github.com/MakersAsylumIndia/Covid-19