This is your typical cheap chinese Polyimide Tape (sometimes people might search for Polyamide Tape incorrectly).
Such tape is often referred to by the brand name Kapton which is used by Dupont for their Polyimide tape. This cheap chinese stuff is “branded” Koptan, I mean, you know how this goes.
I have this tape available in the following widths, each roll is in theory about 30 meters. supposedly.
