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About product and suppliers:
        Alibaba.com offers 609 mail file folder products. About 28% of these are file folder. 

A wide variety of mail file folder options are available to you, such as box file, manila folder, and clip file. You can also choose from pvc, pp, and paper. As well as from folder, case, and wallet. And whether mail file folder is catalogue, brochure, or book. 

There are 526 mail file folder suppliers, mainly located in Asia. The top supplying countries or regions are China, Thailand, and Hong Kong S.A.R., which supply 98%, 1%, and 1% of mail file folder respectively. 

Mail file folder products are most popular in North America, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 212 with ISO9001, 178 with ISO14001, and 27 with Other certification.