New GM LS Fuel Injectors for 4.8L/ 5.3L/ 6.0L

I'm interested in putting a new set in my LQ9 before starting it after blowing the previous engine because of leaking injectors. But have to do my due diligence.
Where did these come from? Any idea how old they are? Age might explain the part number?
I can only find that number listed as a GM number on Amaclone and fleabay. When I go to a GM dealer they give part number 17113698 @>$100 each and a search of a genuine GM site for 25317628 yields no response. They can't find it.
When I look up aftermarket injectors on Rockauto they list theirs as replacements for #17113553 or 17113698.
While aliexpress.com says the 2 numbers are the same part.
Makes me a bit uncomfortable since AliExpress is a Chinese platform that deals with online sales of products from Chinese companies and probably where Amozone and eekBay sellers are getting them from.

Thanks for the honesty. I won't put anything from Amazon on any of my vehicles. You never know what it is or where it came from. Like you said you suspect they're rebuilt, but came in what appears to be a brand new GM sealed bag. Wonder where they buy the bags? Probably on that infamous Dark Web. Surprised no one has made feature film about the evils hiding there. Or maybe they have and being a country bumpkin I just didn't hear about it. Only the hip inner city folks know about that kinda stuff.
I'm just going to do a Tech 2 individual injector test on mine before startup. I've got a couple sets to swap around to balance as close as I can.