So that sounds like just an outright low quality fake then? Ok, that makes sense. I have compared yet but found a spec sheet online for the CY HME 301 and it does say it's meant to replace the Siemens vetsion. CY is for Chen Yang, Chinese obviously, but with a German address. So I guess "designed" in Germany, built in PRC?
I also just re-read a post on ADV Rider (started by our own Mr. Giralt) where Boxerboy said he'd been selling the 301's on ebay and hadn't had any complaints yet. That was from 2013. I suppose I can dig around there and see if there were any follow ups to that.