A suspension substrate according to the present invention includes: an insulating layer; a spring material layer provided on one face of the insulating layer and having conductivity; and a plurality of wirings provided on the other face of the insulating layer. The retaining wheels 14 have friction areas 14a and sliding areas 14b such that both a sliding area 14b and a friction area 14a cooperate with each groove 2 of the singler roller 1. The module data is configured for the module from the selected configuration item into a static timing analysis scenario for performing a static timing analysis of the configured module data. The serum portion is concentrated by removing a portion of water using an evaporator such as a thin film or juice evaporator.