Three workers, Xiao Zhang, Xiao Wang and Xiao Li, work as turners, assemblers and electricians in three factories.

Because Wang is not in Factory B, which is a lathe worker and Wang is not an electrician, Wang is neither a lathe worker nor an electrician, but a fitter.

Because he is not a fitter in factory A but a lathe worker in factory B, Wang is not in factory A or factory B, but in factory C;

Because Zhang is not in factory A, but in factory B, he is a lathe worker, so Zhang is in factory B;

Zhang is a lathe worker in factory B, Wang is a fitter in factory C and Li is an electrician in factory A..

So the answer is: √.