Yong Heng Advice

Guys...considering we are buying from China, where brand name infringement seems to be the rule, rather than the exception...HOW do we know which Yong Heng compressors are the REAL Yong Heng compressors? They are all identical in looks....how do we know which one is the genuine article? The cheap knock-off's seem to fail at an alarming rate?

I want to buy one too...but I'm confused as to who I can buy from that I can trust!