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About product and suppliers:
        Alibaba.com offers 16,016 supply backpack products. About 17% of these are backpacks, 4% are school bags, and 1% are laptop bags. 

A wide variety of supply backpack options are available to you, such as softback, backpack, and internal frame. You can also choose from genuine leather, canvas, and 600d. As well as from day backpack, camping & hiking, and hunting. And whether supply backpack is 30 - 40l, or 50 - 70l. 

There are 16,016 supply backpack suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of supply backpack respectively. 

Supply backpack products are most popular in North America, South America, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 3,401 with Other, 1,912 with ISO9001, and 1,153 with ISO13485 certification.