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About product and suppliers:
        Alibaba.com offers 115 polymer envelopes products. About 12% of these are mailing bags, 2% are packaging bags. 

A wide variety of polymer envelopes options are available to you, such as security, moisture proof, and biodegradable. You can also choose from free samples. 

There are 115 polymer envelopes suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of polymer envelopes respectively. 

Polymer envelopes products are most popular in North America, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 62 with ISO9001, 46 with Other, and 45 with ISO13485 certification.