Moscow, 2017-Jul-05 — /EPR Retail News/ — X5 Retail Group N.V. ("X5" or "the Company"), a leading Russian food retailer, announces the company-wide launch of Pyaterochka's Helping Card (Vyruchai-Karta) loyalty programme following successful completion of the pilot phase. The programme uses a points-based system and personalised offers based on data about customer preferences. The pilot programme was…