Board Of Directors Md. Mizanur Rahman (Managing Director)Phone: +88-01705456000 Email: mizan@optimum-bd.com Md. Elias Ahmed (Director)Phone: +88-01705456002 Email: elias@optimum-bd.com Md. Humayun Kabir (Director)Phone: +88-01705456001 Email: humayun@optimum-bd.com Mohhamad Zakir Hossain (Director)Phone: +88-01705456003 Email: zakir@optimum-bd.com