cooperation ((with; in doing))
提携する｜〔手を組む〕join hands, tie up ((with)); 〔協力する〕cooperate ((with))
「We secured the technical cooperation of [We entered into a technical tie-up with] a pharmaceutical company in the U.S.
We hope to form 「an affiliation [ties] with your company.／We hope to obtain the cooperation of your company.
提携企業｜a company which has a business tie-up (with)