We are always delighted to hear from those who have interest in SDH. Please feel free to ask questions, provide feedback, or give comments regarding our products and/or our company. You can email us using the department links menu on the left or call/fax us at the numbers listed below.

SDH Corporate Headquarters
495-C Edison Court Fairfield, CA 94534
Phone 707.864.8075
Fax 707.864.6832