Cera Engineering, the French expert in ultrasonic welding machines ultrason, machine, process, industriel, soudure, découpe, savoir-faire, sav, vente, certification, garantie, étude Phone: + 33 4 77 92 25 92. Fax: + 33 4 77 74 50 03. contact@cera-groupecera.com. For 30 years, Cera Engineering has been building up its industrial know-how in the field of …