当获悉某人晋升或是在事业上取得巨大成就时，应该打个电话或是写封便签祝贺。这种友好往来对建立和巩固友好的商业合作关系大有益处。
祝贺信写作应遵循以下准则：
1. The purpose of writing the letter is to make your reader feel certain that he or she deserves the special message of recognition and praise.
2. The note should be brief, dealing with the primary topic only. These messages are most effective when they conduct no business.
3. The whole message should carry a tone of being positive and conversational.
4. Be sure to send the letter within a few days of the event. Any delay in delivery of the message would make your effort worse than no effort at all.
假设你刚刚得知你一直与之做进口生意的John Smith先生被提升为ABC贸易公司副总经理（Deputy Managing Director）,代表进口部给他写一封信表示祝贺（REFERENCE LETTER）。
Dear Mr. Smith:
It is a pleasure to congratulate you on your recent promotion to Deputy Managing Director of ABC Trading Company.
Because of our close association with you over the past ten years, we know how well you are qualified for this important office. You earned the promotion through years of hard work and we are delighted to see your true ability win recognition.
Agai, congratulations and best wishes for continued success.
Sincerely yours
Blank Lee
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