Frank, here is the link to the chinese site that i found:

http://www.sero.com.cn/en/products00...e=Heat%20Pumps

if you look at the DC inverter series (air to water) its very similiar to the Altherma.
Another very interesting product is: Heat pump to solar energy, however i like it less since it uses R407, which i like less then R410.

They say that their western Europe market is very large...