Billionaire Mukesh Ambani’s Reliance re-launched the 50-year-old iconic beverage brand Campa Cola in a new contemporised avatar as it looks to ramp up its own consumer goods offering to take on competition from Adani, ITC and Unilever.In January this year, Reliance Consumer Products Ltd, the fast-moving consumer goods arm of Reliance Retail, acquired a 50 per cent stake in Gujarat-based carbonated soft drinks and juice maker Sosyo Hajoori Beverages Pvt Ltd. It had previously acquired the Campa brand from Pure Drinks group for a reported `22 crore.