Maybe they are selling, importing or distributing all these products (including Fluke's)?
I'm not sure that a small (by Chinese standards) Company can be the original manufacturer of so many different products, ranging from multimeters to scopes..
Sometime I think that there is a "master maker" of multimeters, another "master maker" of oscilloscopese, etc, and they are OEM manufacturers for each other.
I don't know, but everybody seems to be selling the same multimeters, but at a closer look they are different.