Oki Electric Industry Co., Ltd., OKI, OKI Group, or OKI Electric, is a Japan-based information and communications technology corporation. This company is headquartered in Toranomon, Minato-ku, Tokyo. OKI operates its services in over 120 countries around the world. Also, OKI manufactured the first Japan-made telephone in 1881. Now this company specializes not only in developing and producing telecommunications equipment but also in information products and mechatronics products. Information & mechatronics products such as automated teller machines and printers. OKI Data, which markets its products under the OKI brand, is totally focused on manufacturing professional printed communications applications, products, and services.