会英文的帮忙翻译下面段话，谢绝使用网上翻译器：

Hello,I am so sorry that we can not sent you a invitation, it is the rule that our company only sent invitations to the clients that have cooperated with us.

unfortunately, our company only send invitation letter to customers who have worked with .

Hello, I'm very sorry we cant send you an invitation, our company rule is that we only send invitation letters to customers we have cooperated with.
望采纳~

Greetings, to whom it may concern， we are afraid to inform you that our invitation letter could not be delivered at this time, the letter is only issued to company's clients and business partners who had business with us in the past.

We apologize for the inconvenience caused by above excusatory fact.
Thank you for your understanding!

HI,I am so sorry we can't send the invitation lettel to you, because we only send the invitation letter to the customers we cooperated before as our rules.