I can't speak with any authority, but it appears to be similar but not identical. The color of the product appears more amber/brown, and the disclaimer that it needs to be drained well doesn't seem to be quite the same as StarSan's motto of "don't fear the foam". However, they are both acid-based sanitizers and likely work in a similar method.
If it's available to you then it's worth trying, but I would not consider it an equivalent to StarSan(by which I mean it may not be better or wose, just different)--be careful to read the directions and labels and to use it as it's manufacturer describes; don't try to follow StarSan's directions unless you're using StarSan.
I wouldn't be concerned that this isn't a brand-name sanitizer; it's likely that it will work as well as StarSan.