The case was one of two the us lodged against china at the wto in april 2007 aimed at stopping what it said was rampant piracy of audiovisual products .
The industry is a key export for the u. s.which enjoys a $ 12 billion global trade surplus on films and other audiovisual products the white house said .
According to the ruling , china 's measures relating to the importation and distribution of films , sound recordings , audiovisual home entertainment products and reading materials breached its trading rights commitments as a wto member .
