About product and suppliers:
            33,874 usb power bank products are offered for sale by suppliers on Alibaba.com, of which power banks accounts for 54%, charger accounts for 4%, and sterilization equipments accounts for 1%. 

A wide variety of usb power bank options are available to you, such as double usb, usb/dc, and single usb. You can also choose from dc, micro usb, and usb usb power bank, as well as from ultra slim, portable, and wireless charger usb power bank, and whether usb power bank is universal, or for usa/canada. 

There are 33,858 suppliers who sells usb power bank on Alibaba.com, mainly located in Asia. The top countries of suppliers are United States, China, and Hong Kong S.A.R., from which the percentage of usb power bank supply is 1%, 99%, and 1% respectively.