qjmotor in china is like the cheaper yet old brand, they give not bad hardware stuff like shocks but design is not their forte. Their plastic are lower quality than Voge and Zontes. their bikes are not feature rich like cfmoto especially if you expect things like cruise control or qs or imu 6 axis stuff. they are not trend setters. But if you want spare parts for the bike, you are able to get everything loose basically every small items, they do have them and you don't need to buy it as a set

my neighbour punya friend got one forgot which model, need to change the rectifier, really big size like for really big motor but the qj was 250cc or something, getting from qj china waited 6 months not yet dapat lel

These China bike need to source from alibaba, Aliexpress and taobao for parts.
Faster and cheaper.

Even jap bikes sometimes hard to find parts like rectifier and need to rebuild. It's the same issue with big bikes no matter jap or conti or China. Unless current & popular model like versys, cb500, cbr650, Suzuki 650.