Flexible polyimides are used in roll-to-roll electronics and flexible circuits, while transparent polyimide, additionally called colourless transparent polyimide or CPI film, has ended up being crucial in flexible displays, optical grade films, and thin-film solar cells. Developers of semiconductor polyimide materials look for low dielectric polyimide systems, electronic grade polyimi... https://americandefensenetwork.com/members/feetpan81/activity/31934/