Matrix assisted laser desorptionionization is performed in a manner that thermalizes large analyte ions in a plume of desorbed material for spectroscopic analysis. At least two ring systems are provided which comprise each two network interfaces and respective bridge connections. As a result, power region-related problems can be resolved much sooner than by using conventional full-chip physical design checking and power grid analysis methods. The air is then forced to change directions before exiting through exhaust ports. Also, the present invention provides a method for manufacturing flooring, comprising the step of processing flooring which includes a sheet-like molded body of the resin composition and manufacturing the sheet-like molded body by processing the resin composition through extrusion or calendaring methods. The control system may include a wireless user pendent.