Shipments to the United States
Due to changes in U.S. customs regulations, all shipments to the United States are now subject to customs clearance.
This means that the recipient will be required to pay customs duties, as well as any applicable taxes and fees upon import.
Please also note that delivery may be delayed while the shipment is being processed by U.S. customs.
![Cover for Qizheng Gu · RF Tunable Devices and Subsystems: Methods of Modeling, Analysis, and Applications (Paperback Book) [Softcover reprint of the original 1st ed. 2015 edition] (2016)](https://imusic.b-cdn.net/images/item/original/992/9783319352992.jpg?qizheng-gu-2016-rf-tunable-devices-and-subsystems-methods-of-modeling-analysis-and-applications-paperback-book&class=scaled&v=1610576781)
![Cover for Qizheng Gu · RF Tunable Devices and Subsystems: Methods of Modeling, Analysis, and Applications (Hardcover Book) [2015 edition] (2014)](https://imusic.b-cdn.net/images/item/original/231/9783319099231.jpg?qizheng-gu-2014-rf-tunable-devices-and-subsystems-methods-of-modeling-analysis-and-applications-hardcover-book&class=scaled&v=1416116023)
![Cover for Qizheng Gu · RF System Design of Transceivers for Wireless Communications (Paperback Book) [Softcover reprint of hardcover 1st ed. 2005 edition] (2010)](https://imusic.b-cdn.net/images/item/original/981/9781441936981.jpg?qizheng-gu-2010-rf-system-design-of-transceivers-for-wireless-communications-paperback-book&class=scaled&v=1435866816)
![Cover for Qizheng Gu · RF System Design of Transceivers for Wireless Communications (Hardcover Book) [1st ed. 2005. Corr. 2nd printing 2006 edition] (2005)](https://imusic.b-cdn.net/images/item/original/616/9780387241616.jpg?qizheng-gu-2005-rf-system-design-of-transceivers-for-wireless-communications-hardcover-book&class=scaled&v=1409906590)