No kick backs .
I have broken a handlebar myself doing a dropoff but it was a used alloy bar Truvativ ex rotorburn .
i have broken wheel rims , frames, seats , cranks , pedals and seatposts and a handlebar is the worst.
Carbon fibre can be very sharp when broken and a handlebar is a serious thing to break compared to any other bit of a bike .
Otherwise there are horror stories and videos of Chinese produced handlebars that look OK from the outside but have no structural integrity or design that can impale the rider.
I am sure there are no effective Chinese consumer laws.