The purpose of my coming here is to inquire about possibilities of establishing trade relations with your company.
我此行的目的正是想探询与贵公司建立贸易关系的可能性。
who is which depending on whether the customer's account is in credit or is overdrawn.
究竟谁是债务人谁是债权人,要看储户的账户是有结余还是透支。