Yes, Japanese Schick Injectors and Proline are made in USA, says so on the package. You can go to this Amazon Japan link, go to third pic. Says ‘made in USA’ in top right corner. You can use Google Translate Phone app in Camera mode to translate it yourself.Wait a minute I have seen you type this before, but are saying the VERY expensive Schick Injector blades that Connaught sells are actually made in the US? I have never been able to figure out where the Prolines are made, the whole packaging is in Japanese. This would make some sense, but they still have to be higher quality than the Ted Pella blades for the US market. Right? It sounds like these Black Labels are the deal of the decade.
Ted Pellas’ made in US too but certainly in my experience the Japanese Injectors are much better quality.
But not sure what you mean re Black Labels being the deal of the decade. The Supply Blacks are made in Seki, Japan, don’t know which company makes them but both Kai and Feather have factories in Seki.