Sorry, I don't normally make such radical changes when correcting a notebook entry but I wanted to give you a better idea of what I look for in a business letter. I added more details as an example; but, ideally there should be even more detail related to what it is you are asking of the other company.

To whom it may concern:
I represent XYZ Incorporated from China. "Here you need one sentence on what the company does." For example
We are a design firm specializing in trade show exhibits.

Members of our sales staff saw your companies work at Analytica in Germany this past April; and, we were very impressed with your exhibit booth construction. We have many Chinese customers who will be exhibiting at Electronica this coming November. Our company will provide the booth design for our customers; but, we need help with specialized onsite booth construction. We hope your company can help us for the special booth construction.

I look forward to your response; and, our hope is this can be the start of a long-term relationship with your company.

Best Regards;
Amanda Lee
"Add a title here"
"If this letter is not on letterhead; then full company contact information should also be included here."

Notes:A business letter should not start with "Hi:". Ideally, it is best to have a contact name. If you don't have a specific name you can use a specific title or "To whom it may concern". Sometimes, business letters also start with "Gentlemen".

I would not use "Good Morning" because you really don't know the time your letter is being read.

If you are representing a company; instead of using the personal pronoun "I" throughout, you should use terms which represent your group. For example; "we" or "Members of our sales staff".

Be specific with details. Name the person or group in your company which found this contact, and, be specific about where the contact was made.

If you are sending this as an email then the title also needs to be as specific as possible.

business cooperation

HI：

Good morning.
I'm from an enterprise from in china.
I have seen you in at a fair in Germany.
I think your Exhi booth design is very good.
we have a lot of chinese customers They who will go to Germany to attend the exhibition
I provide the booth design for them.
so ,I hope you can help us for with the special booth construction.

We will keep a long-term cooperation with you.



BEST REGARDS

Amanda lee