Paragon Building Products, Inc. is a leader in the industry of packaged cementations products and the manufacture of a full line of cement block products, founded in 1960 as Ajax Cement, with a single manufacturing plant in East La Palma Ave, Anaheim California. Paragon currently produces at their Arizona facilities under the name of Paragon Concrete Products located in Casa Grande which opened in 1989 and the most recent acquisitions in April 2010 Paragon Aggregate Products Inc. with locations in Glendale and Tucson. Their presence in Nevada is under the name of Pre-Mix Products which started operations in 2002.