dear friend
this codes and stickers are just genuine activation products for windows 7pro and 8.1 pro,this topic just offer original keys and stickers for people
that have not original windows or other windows user that want install a genuine and legit windows 10.
if you already have an original windows 7 or 8.1 pro key you just download correct version and upgrade to win 10 pro.
and about you another question my suppliers are computer companies that obtain this stickers from laptop ,... factories. and about that
screenshot my supplier sent all of stickers in 1 picture and i used paint software for separating that stickers.
and i sell this stickers at
kinguin.net: https://www.kinguin.net/merchant/3425046/ you can buy it at kinguin if you like