I must ship a box of replacement parts to a customer, and our normal courier is not available for this shipment. Therefore, I need information about express box shipping to Croatia. If your company can provide us this service, please send your company's information to my email address. Since I am also asking for an estimate on your shipping cost, I am including the specifications of this box here. The box weighs 12 kilograms. Its size is 30 cm in length, 20 cm wide, and 15 cm deep. It is important this box is delivered to Croatia within the week. Is this possible for you to do given it is being shipped from Rome, Italy? Can you guarantee you will deliver it by this time? Also, do you provide tracking information? Is this an additional charge, or is it included in the shipping cost? Thanks for sending me this information. Please also include any additional information that I must know in order to proceed with shipping this box by express shipping with your company.