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About product and suppliers:
        Alibaba.com offers 5,271 standard envelope products. About 19% of these are mailing bags, 5% are paper envelopes, and 4% are packaging bags. 

A wide variety of standard envelope options are available to you, such as ordinary paper, paper, and kraft. You can also choose from wallet envelope, window envelope. As well as from business envelope, wedding decoration & gift, and gift envelope. And whether standard envelope is recyclable, moisture proof, or disposable. 

There are 5,271 standard envelope suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of standard envelope respectively. 

Standard envelope products are most popular in North America, Domestic Market, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 1,342 with ISO9001, 1,037 with Other, and 314 with ISO14001 certification.