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About product and suppliers:
        Alibaba.com offers 50,821 a4 folder products. About 67% of these are file folder, 1% are catalogue printing. 

A wide variety of a4 folder options are available to you, such as manila folder, document bag, and ring binder. You can also choose from pu, leather, and paper. As well as from folder, bag, and case. And whether a4 folder is free samples, or paid samples. 

There are 50,556 a4 folder suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 92%, 5%, and 1% of a4 folder respectively. 

A4 folder products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 11,319 with ISO9001, 7,633 with Other, and 2,080 with ISO14001 certification.