Istinsa Contract Permissibility

Can I do an istinsa contract for a company to manufacture the products for me but they will not manufacture all of it?

They will make most of the product and then outscource some of the work to a company I do not know, to make the remaining amount and then deliver it to me.

May Allah bless you.

It depends on the agreement but in essence yes it is possible under a structure called parallel istisna’.

Kind regards