A lot of DDCs are manufactured in China, although dcs makes one that is manufactured in England. The Berkeley Alpha USB is manufactured in USA and there are probably more.
The Singxer SU6 measures well and has worked well for me. It is not in my system now since the two DACs I currently have are optimized by the USB input. I also owned a Gaia that worked. If I were buying new, I would look at the Holo Red, which measures well and is also a streamer.