Bram from FSI answered this for their panels at Lift Gamma Gain:
Zunzheng is our Shenzhen, China based manufacturing partner and has been working in close partnership with FSI since 2008. You cannot purchase directly from Zunzheng in the Americas, Europe, India, and most other territories outside of mainland China, just like you cannot purchase from FSI directly in mainland China. We split our sales/service responsibilities up like this to better serve our customers. For multi-national corporations with offices extending across these territories exceptions could be made if needed, though this has not really been an issue yet, for the sake of product consistency because there are some very important differences when getting the product from Zunzheng vs. FSI, including but not limited to:
1. Different firmware with some features that will not work in the same way.
2. Different models (a limited number of products may be made only to address a particular market)
3. Completely different reference instruments are used for calibration.
4. and of course support. Your support comes from Zunzheng when purchasing from them and from FSI when purchasing from us.
We set a global list price with Zunzheng so the price is essentially the same in all territories.
Zunzheng is on the front of the monitors and back, along with "Flanders Scientific". They don't try to hide it.