OPTROTECH Ltd. Mailing address: 194044, Saint-Petersburg, Chugunnaya Street, 20 Fax: (812) 324-84-29 e-mail: info@optrotech.ru General Director: Polishchuk Grigory Sergeevich Phone: (812) 542-89-68 e-mail: g.polishchuk@optrotech.ru Director, R@D Korolev Aleksander Nikolaevich, PhD Phone: (812) 324-84-03 e-mail: a.korolev@optrotech.ru