 The present line to Wakayamashi was completed in 1903, and in 1906 the first dining car on a private railway in Japan was introduced on the Wakayama express.The duplication of the line extended to Hamaderakoen in 1907, Kaizuka in 1911, Takako in 1915 and to Wakayama in 1922.Electrification at 600 VDC began in 1907 on the section from Namba to Hamaderakōen, and was completed in 1911.