The invention provides a service provider system that enables a subscriber to purchase services over a network from a service provider for the benefit of one or more third parties located in different locations. The feed table is mounted above a lower housing shell. A control device is provided, which controls the setting means based on the measured values of the measuring means. According to this structure, deterioration of the dielectric layer can be prevented, and a capacitor device exhibiting a good leakage current characteristic is obtained. The connecting member is connected to the cylinder, and the shaft extends through the cylinder and is received in the receiving part of the base. A liquid reactant is positioned in a first section of the thermic cavity and a solid reactant positioned in a second section of the thermic cavity.