 SHANGHAI, June 21, 2021 PRNewswire -- Dada Group Nasdaq: DADA Dada, Chinas leading local on-demand delivery and retail platform, today announced record sales during the 2021 6.18 Shopping Festival the Festival, Chinas major mid-year online shopping event, held from June 1 to June 20, 2021. Dadas on-demand retail platform, JDDJ, reported that transaction volumes doubled from June 1 to June 18, 2021 compared to the same period last year. 