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About product and suppliers:
        Alibaba.com offers 24,579 a4 size file folder products. About 78% of these are file folder, 1% are briefcases, and 1% are packaging boxes. 

A wide variety of a4 size file folder options are available to you, such as pp, paper, and pu. You can also choose from presentation folder, document bag, and soft bag. As well as from folder, bag, and case. And whether a4 size file folder is free samples, or paid samples. 

There are 24,558 a4 size file folder suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 88%, 9%, and 1% of a4 size file folder respectively. 

A4 size file folder products are most popular in North America, Western Europe, and Northern Europe. 

You can ensure product safety by selecting from certified suppliers, including 4,074 with ISO9001, 2,228 with Other, and 646 with ISO14001 certification.