NEW DELHI : Retailers Association of India (RAI) on Thursday sought several concessions such as extension on existing permits and licences of retail establishments and shopping centres, waiver on property tax for the current fiscal, and extension of moratorium on principal and interest for retailers, as the industry tries to deal with the second wave of covid-induced lockdowns.In a statement on Thursday, RAI said government authorities and financial institutions need to help the retail industry minimize the economic impact of the second wave.To that effect, the industry body that represents the interests of several small and large retailers, has asked for a 12-month extension for renewal of existing permits, licences, no-objection.