i strongly thing its a scam site. crypto only. and they copied the icon from bitmain website (made a screenshot and edited the text). very unprofessional lol.
"Beware of phishing scams - xxxx only accepts orders through our official website."
This website
www.akminer.com is real, because website owner has shared me some purchase order information, some buyer I have confirmed with them was real order and no scam.
Well, thats a great first post endorsement, lol!
Though, I know akminer.com is real, but I think the question is about Dayun.company. But there are plenty of sellers with Zig, like akminer, so you dont really have to bother about Dayun.company.