Note that, when you click a link, Amazon may default to new (non-Resale) version of the item. To get the sale price in that ...

A Logitech Bluetooth keyboard allows you to easily connect to any device you work from in a second and start typing.

Abstract: The power supply system for medium-speed maglev train using power rail and collector shoes has the defects of causing friction, heat generation, noise, vibration and so on. Making use of ...