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		2-8-24 Mitejima, Nishiyodogawa-ku, Osaka City, Osaka 555-0012 TEL. +81-6 -6475 -3000 FAX. +81-6 -6475 -2213 E-mail : main@otk.ne.jp		414-1 Kitatsuchiyama, Tsuchiyama-cho, Koka City, Shiga 528-0211 TEL. +81-748 -66 -1135 FAX. +81-748 -66- 0111 E-mail : shiga@otk.ne.jp
		3-25-15 Uchihonmachi, Suita City, Osaka 564-0032 TEL. +81-6 -6382 -8601 FAX. +81-6 -6382 -1401 E-mail : corp@otk.ne.jp		139-13 Aza-Toyohisa, Toyohisa, Matsushige-cho, Itano-gun, Tokushima 771-0213 TEL. +81-88 -699 -5511 FAX. +81-88 -699 -7555 E-mail : toku@otk.ne.jp