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About product and suppliers:
        Alibaba.com offers 1,955 opaque mail bag products. About 67% of these are mailing bags, 29% are packaging bags. 

A wide variety of opaque mail bag options are available to you, such as poly, plastic, and kraft paper. You can also choose from mailing, shopping. As well as from biodegradable, moisture proof, and recyclable. And whether opaque mail bag is self adhesive seal, heat seal, or patch handle. 

There are 1,958 opaque mail bag suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and India, which supply 98%, 1%, and 1% of opaque mail bag respectively. 

Opaque mail bag products are most popular in North America, Oceania, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,955 with Other, 462 with ISO9001, and 61 with FSC certification.