Pittsburgh, PA - Printing Industries of America (PIA) announces its new partnership with Mailers Hub through its National Buying Program. Members of PIA and its local affiliates can access the annual Mailers Hub subscription with a $100 discount.With an annual subscription, member companies gain access to many of Mailers Hub’s benefits including exclusive web content, Mailers Hub News e-newsletter, personalized postal rate charts, hotline access to industry experts, free registration to we