I few days ago ‘Reda’ ask about coreofficial.com – so I had a look.
The site is hosted on GoDaddy, so it’s most likely not from China. On their about page they say the company does iPhones since 2007 ….
.. however, the WHOIS tells us something different:
Created in December 2016 – a bit over one month old now.
I don’t think they are in China, but lets have a look where they are located … right, there is no address, no phone. We even don’t know what country they are in.
Would I buy there? NO WAY!