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About product and suppliers:
        Alibaba.com offers 8,517 strong backpack bag products. About 33% of these are backpacks, 16% are school bags, and 6% are shopping bags. 

A wide variety of strong backpack bag options are available to you, such as softback, backpack, and internal frame. You can also choose from canvas, genuine leather, and pu. As well as from day backpack, camping & hiking, and cycling. And whether strong backpack bag is 30 - 40l, or 50 - 70l. 

There are 8,517 strong backpack bag suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of strong backpack bag respectively. 

Strong backpack bag products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 1,324 with Other, 1,270 with ISO9001, and 446 with BSCI certification.