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The 17th China (guangzhou) international professional lighting and audio exhibition hall A, China import and export fair, opens on February 24, 2019.Focusing on the latest development trend of audio-visual system integration in the fields of lighting, audio, communication and conference and KTV, the exhibition welcomed 1,300 exhibitors from dozens of countries and regions and more than 100,000 professional buyers from all over the world, both sets of data set a record high.