for whom

[Ksenia]

This document is important not only for him, but also for his customers for whom such a document is the confirmation
that his company XXX sells your original spare parts.

Are there any other ways to say "for whom"?
If you have any other ideas how to rephrase this sentence, let me know, please.

Thank you.

 

[vtercia]

I'm not a native speaker, just trying:

This document is important not only for him but also for his customers as it is the confirmation document that his…

 

[tedmc]

The document is important not only for him, but also for his customers, as it serves as an assurance that his company, XXX, sells original spare parts.

 

[Matthew Wai]

This document is important for him and his customers because it confirms that his company, XXX, sells your original spare parts.

 

[Skrej]

This document is important not only for him, but also for customers to which such a document is confirmation
that his company XXX sells original spare parts.

 

[Matthew Wai]

customers to which

Can 'which' refer to people?

 

[Skrej]

Yes. 'Who', 'which', and 'that' can all be used to refer to people.

 

[Rover_KE]

The above suggestions are OK, Ksenia, but inferior to the original sentence, in my opinion.

Why did you want to rephrase it?

 

[Ksenia]

The above suggestions are OK, Ksenia, but inferior to the original sentence, in my opinion.

Why did you want to rephrase it?

Because I thought that it was wrong...

 

[emsr2d2]

Because I thought that it was wrong.

Why did you think that?

 

[Ksenia]

Why did you think that?

In Russisn we often say "for whom", but I thought it is not the same case in English.
I am not sure of myself.

 

[Matthew Wai]

In English 'whom' is rarely used. That's what I learned from this forum.