Anritsu MG3641A - Manual (Page 8)

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Notes On Export Management
This product and its manuals may require an Export License/Approval by
the Government of the product's country of origin for re-export from your
country.
Before re-exporting the product or manuals, please contact us to confirm
whether they are export-controlled items or not.
When you dispose of export-controlled items, the products/manuals need
to be broken/shredded so as not to be unlawfully used for military purpose.