business-to-business
adjective [ before noun ] uk/ˌbɪz.nɪs.təˈbɪz.nɪs/ us/ˌbɪz.nɪs.təˈbɪz.nɪs/ (abbreviation B2B)
（协定或贸易）企业与企业之间的，公司对公司的
describing or involving arrangements or trade between different businesses, rather than between businesses and the general public