General Security Services - Business Directory Go back to directory. Add to Address Book. General Security Services General Security Services Contact: Richard DeLong Work 633 N Marine Avenue Wilmington CA 90744 USAwork Work Phone: 310-772-7277work Website: http://www.gss1944.com/ Connections Business Directory | Leaflet | © OpenStreetMap contributors 633 N Marine Avenue Wilmington CA 90744 USAGet Directions