Never heard of that brand. Any reason why you need FIA approval?
I run TRS harnesses and they are very good.
Schroth harness are some of the best you can have.
Just looking around, have a takata the now but fancy a change, been looking at srs, sabelt and schroth too
If you have a real takata then you have a very good quality harness and jdm points haha.
Unless you want to go racing isnt much point in getting an FIA approved belt.
Given the one you posted above is £109 and the equvilant from a cheaper brand like TRS is in the £300 mark I wouldnt buy the one above.