::Researching this a while later I found All-China Federation of Trade Unions, however there seems to be dispute over whether it's a genuine trade union I don't believe the original source  was considering them per the wording 'Staying away from the ITUC however will be the the Communist-affiliated World Federation of Trade Unions (WFTU), which after the WCL and ICFTU is the third largest trade union group in the world.'. BTW I should add that my memory is I did search at the time and found repetion of the claim (it's AFP after all) but no sources saying the WFTU was the second largest.