(business to business) used to refer to business activities between companies, especially using the Internet 企业间电子商务的，B2B电子商务的
From Longman Business Dictionary
B2BB2Badjectiveadj, adverbadv
COMMERCECOMPUTINGbusiness-to-business; B2B buying, selling, exchanging information etc is done between companies on the Internet, rather than between companies and customers
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