https://en.wikipedia.org/wiki/Inspur_K-UX
"Inspur K-UX is a Linux distribution based on Red Hat Enterprise Linux produced by Inspur, a Chinese multinational company specializing in information technology. Inspur K-UX 2.0 and 3.0 for x86-64 are officially certified as UNIX systems by The Open Group."
http://www.opengroup.org/openbrand/register/brand3617.htm
"UNIX 03
Company Name: Inspur Co., Ltd
Product Name: Inspur K-UX 2.0
Environment: on Inspur TS K1 system
Registered on: 14-Dec-2012
Display a copy of the Brand Certificate in PDF
Search the Conformance Statements database for all UNIX 03 registrations
See all the registered products for the UNIX 03 Product Standard
See more information about the UNIX 03 Product Standard"
Forrás: Yes, Linux is Unix too @ Reddit