Contact Us Get in touch with us. Please call or email us directly for more information. Contacts Johnathan Nguyen[President/Estimator] Dynomill@sbcglobal.net 626-454-1805 Ext. 201 Steven Nguyen[V.P./Manufacturing Manager] Steven.nguyen@dynomill-us.com 626-454-1805 Ext. 202 Business Hours Monday-Friday: 7am to 3:30pm Saturday: Closed Sunday: Closed