Parex USA, Inc., a California Corporation, is a subsidiary of the ParexGroup, a division of Materis, S.A., a French Corporat...ion. The ParexGroup is one of the world's leading manufacturers of specialty chemicals and ready-to-use mortars for the construction industry. With over 55 manufacturing sites, 9 R&D centers in 20 countries the ParexGroup employs more than 3,100 industry professionals...