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About product and suppliers:
        Alibaba.com offers 3,220 a3 paper folder products. About 36% of these are file folder, 1% are file folder accessories, and 1% are catalogue printing. 

A wide variety of a3 paper folder options are available to you, such as box file, suspension files, and presentation folder. You can also choose from folder, bag, and case. As well as from paper, pp, and pvc. And whether a3 paper folder is free samples, or paid samples. 

There are 3,218 a3 paper folder suppliers, mainly located in Asia. The top supplying countries or regions are China, Hong Kong S.A.R., and Singapore, which supply 91%, 6%, and 1% of a3 paper folder respectively. 

A3 paper folder products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 480 with Other, 359 with ISO9001, and 147 with BSCI certification.