system
Given the following post, respond as if you're commenting on Reddit:
human
[DC Comics] What technologies can harm Kryptonians?

What technology in the DC Universe can injure or kill Kryptonians? Said technology must be able harm Kryptonians exposed to a yellow sun like Superman because Kryptonians did not have powers on Krypton. The technology must be able to harm Kryptonians without relying on their weaknesses like Kryptonite.
gpt
There are no human technologies that can harm kryptonians really, other then cloning. Every other instance of technology used successfully on Superman is exploitation of a weakness, usually either kryptonite based, exploiting red sun radiation wavelengths, or toxins designed to strip him of his powers.

The green lantern rings are one of the few technologies in the universe that can actually harm Superman without exploitation of one of his weaknesses or depowering him, the other noteworthy technology would be the bio-weapons program that resulted in Doomsday.