D & F's PIGC301 Ikirahuri cya Polyimide Ikirahuri cyometseho Urupapuro rugizwe nigitambara cyibirahuri kiboheye cyatewe kandi gihujwe na polimide idasanzwe ya termosetting, yandujwe nubushyuhe bwinshi nigitutu. Imyenda y'ibirahuri iboshye igomba kuba idafite alkali kandi ikavurwa na KH560.