Guy on the return address appears to be real:
https://www.linkedin.com/in/andrii-kuchmystenko-a282a946/?originalSubdomain=ua
It DOES look like how someone would ship a sheet of acid KEK
Sending pic' of the return address to a Russian to see if they can pull it up on G00g Maps and send me the link. I tried, but it seems that street does not exist in that town – I am probably trying to type it in wrong.
I am sure Russian friend will probably say, "I don't know, it's fucking Ukrainian."
And Russian guy says this is that address – appears to be an empty lot with a garden furniture store next door?
https://www.google.com/maps/place/Aivazovs'koho+St,+54,+Zaporizhzhia,+Zaporiz'ka+oblast,+Ukraine,+69000/@47.8838576,35.0596858,17z/data=!3m1!4b1!4m5!3m4!1s0x40dc64186c4d9de7:0xd2e4fd4b8cc34ad2!8m2!3d47.8838576!4d35.0618745