Dear Seniors,
Today I have to send a company introduction letter to one of our client. Ours is a industrial manufacturing unit.
Please help out.

Thanking in advance

Nisar

Be brief in your letter.

Introduce yourself, introduce your company (product, market niche, competitiveness, delivery, etc), AND how it will help them, ask if there is interest, be polite but not whoosy.

End with an interest in talking further in person.

Stringer

Hi, nisar4u!

Also, if you would like to post a draft of your letter here, without putting any contact information in it, I'm sure that there will be those of us who'll be willing to come along to suggest to you ways that you might make improvements to it.

Thanks!