What seems to be happening is that Ukraine, which has a rocket industry from the Soviet era, is building such missiles, and, through a quiet deal with Taiwan, the electronics is provided.[1] This is not a secret but nobody talks about numbers.

[1] https://ipdefenseforum.com/2026/01/taiwan-looks-to-partner-w...

Lucky they didn’t buy from the US. Some tech billionaire would have found a way to shut it down.