Five to eighty-five percent by weight of an aromatic polycarbonate resin (A component) having a weight-average molecular weight (polystyrene equivalent) of 27000 to 35000, 0.2 to 10 percent by weight of an impact strength improver (D component), 0.05 to 4 percent by weight of a core-shell-type styrene-based polymer flame retardant (E component) having a sulfonate group bonded to a particle surface layer portion, 5 to 20 percent by weight of an inorganic filler (F component), and 0.1 to 0.5 percent by weight of a polyfluoroolefin resin (G component) are mixed.