This is part of a general scam targeted at American businesses.
I get emails from Russia, Romania, Argentina, South Africa. They claim to want to buy flyers or stickers from me....50,000 or 100,000 at a time.
They think American business people are so desparate for business that we will give them our banking information so they can "wire us funds" for the high volume of work that they will "buy".
I used to be polite and reply by saying that I was confident they could find a local printer that could better serve their needs. I even went so far as to locate a website that specializes in bulk printing by overseas printers and include that in the email.
Now I just ignore them.