A conductive film has transparency and a high level of electrical conductivity, which is used for an electromagnetic interference film hardly causing a moir\xe9 phenomenon, and the like. The compositions comprise acid extracts or alcohol extracts from jugloneproducing members of the Juglandaceae. The inclusion of additional glass components such as Al2O3 has been shown to enhance the thermal stability and particularly the chemical durability of the boro-tellurite glasses. The fixing member when fixed to the circuit board presses the second heat-conducting plate against the second heat-generating element. Potential states are found during diagnosis of a local component, give one or more observations of that component.