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backchina.com appears in the published seller files of 3 advertising networks. Each row below is that network's own declaration that it is authorised to sell this site's inventory, with the date the relationship first appeared in the record.
seller_id 20230011
seller_id 642
seller_id 643d2f0e403f087821f16f4e
Same niche, closest authority score — the competitive set a network would compare backchina.com against.