居间活动 meaning in English

brokerage activity

Where the broker facilitated the formation of the proposed contract , the brokerage expenses shall be borne by itself
居间人促成合同成立的，居间活动的费用，由居间人负担。
Where the broker failed to facilitate the formation of the proposed contract , it may not require payment of remuneration , provided that it may require the client to reimburse the necessary brokerage expenses incurred
第四百二十七条居间人未促成合同成立的，不得要求支付报酬，但可以要求委托人支付从事居间活动支出的必要费用。