''SDI is a family-owned company that operates under a very important motto: Quality is Job #1.
SDI was started by Michael James Patrick Shannon in 1990 out of his own home garage. Since then,
our company has evolved from a small home-garage business to a successful large-scale company employing over 65 people.''
Phone
(800) 794-2345
Address
1360 E Locust St. Ontario, CA 91761 Ontario, California