blackdogの発送がさらに遅れる件に関して

21日のメール。

Due to US export regulations, the shipment of your BlackDog unit has been
slightly delayed. We expect to have the appropriate approvals soon and plan
to immediately ship your BlackDog unit thereafter. Your credit card will
not be charged until your BlackDog unit ships and once your order has been
fulfilled you will receive an email confirmation that your BlackDog unit is
on its way.

export regulationsってどこがだよ。