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About product and suppliers:
        Alibaba.com offers 134 a-4 size magnifier products. About 38% of these are magnifiers, 2% are microscopes. 

A wide variety of a-4 size magnifier options are available to you, such as glass, plastic. You can also choose from aspheric, spherical. As well as from free samples. 

There are 134 a-4 size magnifier suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of a-4 size magnifier respectively. 

A-4 size magnifier products are most popular in North America, Western Europe, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 19 with Other, 17 with ISO9001, and 12 with ISO14001 certification.