China well-known Trademark. "Soundking"Brand is Designated cables for National Centre for the Performing Arts,China Pavilion Theme Pavilion World Expo 2010 Shanghai China.specification of cablesBB974 / BB975 With Protection Plug CORE STRUCTURE (20*0.12+32*0.12)*2CABLE OUTER DIAMETER O.D.4.0*8.0Length:1m, 2m, 3m, 5m,10m,15m Audio cables