[Koha] export our MARC21 records to other system

Dear all Kindly, do you have any idea how to set our Z39 for other libraries that can import our cataloging records from koha?? Regards -- -- <https://www.unizwa.edu.om/>  <https://ishraqa.unizwa.edu.om/>  <https://alkhalil.unizwa.edu.om/>  <https://instagram.com/unizwaoman?utm_medium=copy_link>  <https://www.facebook.com/unizwaoman/>  <https://twitter.com/unizwaoman>