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Professional China Custom Coasters - USB Heated Coasters – Sjj
In our daily life, especially in cold weather, there are many times that require heat insulation, such as milk, coffee. With our USB insulation rubber coaster on hand, no more worrying about your drinks getting cold. Made from eco-friendly soft PVC rubber material and powered by the USB cable, no batteries required which is easy to connect with the computer, tablet, laptops, travel chargers or other USB devices. The size of USB beverage warmer usually designed at 10cm wide 5mm thicknes...
