Did the Factorio developers change the graphics or where did the problem come from?

Recycling Machines say Unknown Key by Dectorio, Angels Enhancement, Darkstar Darkstar 2 is (Darkstar Utilities), Angels logistics(this is believed to be Angels Industries), Compound-Splitters and Natural Evolution Screenshot: http://prntscr.com/m6meb0 http://prntscr.com/m6mek6 http://prntscr.com/m6m...

I noticed that in my case somehow 2 different fiberglass plates are available Screenshot: http://prntscr.com/knkt8e and this http://prntscr.com/knku6n But I found the icon at Bob electronics in the icon directory: http://prntscr.com/knkwja So I'm just a bit confused sry for error this is translate w...

If I see it right, the Unknown Key comes at Recycling Machine by Angel's Refining I do not know if there is more because I'm not quite there with my research Sry for Error i have translate with Google Link to the Discussion from the Modpag with Screenshots: https://mods.factorio.com/mod/ZRecycling/d...