I would be very leery of a no-name shock from China that is appropriate for everything from a KZ750 to a GSX1400. Just because the eye-to-eye length is about right doesn't mean the spring rate or dampening range is right.
I don't think it's design specs are better than Honda's or manufacturing quality better than Japanese.
The dampening knob reads "steering damper", just a little insight into their cost-cutting measures. Perhaps it was made in the factory of Mr O. Lin.