What can you say when you want to contact people for sponsorship

Hello, I am (Name, and position)

I have noticed your outstanding performance. I would like to invite you to join our team of sponsors, you will be receiving endorsement for our company, along side some supplies from us to use.

Feel free to contact me with any questions or concerns.
   
                                                                                     Sincerely,
                                                                                           (Name and position)

This is almost the same letter like the other user wrote, but it's kinda different. I edited some things I think are errors.

Dear (Mr. or Mrs.) (Name),

I have noticed your outstanding great performance. I would like to invite you to join our team of sponsors, you will be receiving endorsement for our company, alongside some supplies from us to use. 

Feel free to contact me with any questions or concerns.

Sincerely,
(Name) 
(Signature)