O’KEY Group S.A. (LSE: OKEY), one of the largest food retailers in Russia, announces the opening of a new supermarket in Sestroretsk, the Group’s 110th store and 42nd store in St Petersburg MOSCOW, Russia, 2017-Apr-21 — /EPR Retail News/ — The 1,300 m2 supermarket is located in Kurortny region of St Petersburg (Sestroretsk, Primorskaya road, 268 A).…