Holly,
That's a gorgeous clone you have. I have a collection of clone badges (brand names) in a photo file with well over a 100 names.
I also have a half dozen clones of my own and all of them can use the same belt, bobbin and bobbin winding tire.
I think you can say that for most of them.
The bobbin is, or so I've seen, the common class 15 bobbin.
I've seen the color matched motor, controller and wiring harness on many of the Japanese machines. It adds a bid of class to them I think.
Joe