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About product and suppliers:
        Alibaba.com offers 446,365 a4 products. About 4% of these are specialty paper, 2% are copy paper, and 2% are a4 paper. 

A wide variety of a4 options are available to you, such as a4, a3. You can also choose from white, colored, and black. As well as from free samples, paid samples. 

There are 443,466 a4 suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Kenya, and Taiwan, which supply 97%, 1%, and 1% of a4 respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 97,689 with ISO9001, 56,718 with Other, and 16,174 with ISO14001 certification.