YOU SAID:

I have a business of mutual benefit for you

INTO JAPANESE

私はあなたにとって相互利益のある事業をしています

BACK INTO ENGLISH

I do business with mutual benefit for you

INTO JAPANESE

私はあなたのために相互利益のある取引をします

BACK INTO ENGLISH

I trade for mutual benefit for you

INTO JAPANESE

私はあなたのための相互利益のために取引します

BACK INTO ENGLISH

I trade for mutual benefit for you