A spreading device includes an injector and a spreading tube connected with the injector. The method involves applying a coating of a ferrite containing glass composition to the surfaces of those metal or ceramic substrates that are susceptible to detection through their radar or infrared signature. The control system thus reduces the likelihood of unstable idling conditions when, for example, inadequate cooling water or extremely cold cooling water is being supplied to the engine. Methods of manufacture for the aforementioned electrical connector and business methods are also disclosed. An electrolyte membrane is formed on the hydrogen separation membrane, and the curvature of the electrolyte membrane is changed to generate a compressive stress in the electrolyte membrane.