I've found their stuff to be lower tier hobby grade.
My concern with most of these Chinese brands is that they skimp on the coax connectors. They use plastic overmoulding to hide the crimp connectors. When I've disassembled other brands (Tram/Browning) I found that the coax crimp on the connector was exceedingly poor quality, basically someone smacked it with a center punch to hold it in place before the overmoulding process.
There are much better options out there, and if you shop around, you'll find them at better prices. After 30+ years of doing this stuff, I've found that sticking with the known name brands really pays off: Larid, Larsen, etc.