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About product and suppliers:
        Alibaba.com offers 3,743 black portfolio folder products. About 83% of these are file folder, 5% are notebooks. 

A wide variety of black portfolio folder options are available to you, such as presentation folder, document bag, and ring binder. You can also choose from leather, paper, and pu. As well as from folder, bag, and case. And whether black portfolio folder is free samples, or paid samples. 

There are 3,743 black portfolio folder suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of black portfolio folder respectively. 

Black portfolio folder products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 595 with Other, 550 with ISO9001, and 18 with FSC certification.