Adres: Atatürk Mah. Gülay Sk. No:17  Ataşehir / ISTANBUL
Telefon: (+90) 216 5265475
Fax        : (+90)216 5265475
E-Posta: info@optimumelektronik.com

Address: 25/F, O.T.B. Building, 160 Gloucester Road, Wanchai, Hong Kong
E-mail: info@respectelectronics.com