Betting on higher margins from private labels, Reliance Digital, the consumer durable chain of Mukesh Ambani's Reliance Retail, is planning to introduce its own brands of home theatres, LCD televisions and digital cameras. The brands, according to a source, will be called Rldigi. Reliance Digital is planning tie-ups with domestic and international consumer durable and appliance companies. These private labels are expected to contribute 12-15 per cent of Reliance Digit