Mitsubishi Materials USA Corporation www.mmus.com +1 800 523 0800 11250 Slater Avenue, Fountain Valley, CA, 92708, USA Mitsubishi Materials USA Corporation www.mmus.com +1 800 523 0800 11250 Slater Avenue, Fountain Valley, CA, 92708, USA Mitsubishi Materials U.S.A. Corporation (MMUS) was founded in 1984 with a charter to provide solutions in manufacturing process technologies to leading manufacturing companies in North America. Mitsubishi Materials’ name has an instant brand recognition as being a leader in technology, quality, product offering; having talented employees; and as a partner with leading manufacturers in diverse industries. Contact Us Facebook page Twitter YouTube Contact Us Facebook page Twitter YouTube Latest News