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About product and suppliers:
        Alibaba.com offers 305 tyvek envelopes products. About 23% of these are paper envelopes, 20% are mailing bags, and 4% are file folder. 

A wide variety of tyvek envelopes options are available to you, such as kraft, ordinary paper, and poly. You can also choose from gift envelope, business envelope. As well as from wallet envelope, window envelope. And whether tyvek envelopes is free samples. 

There are 302 tyvek envelopes suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Pakistan, which supply 87%, 9%, and 1% of tyvek envelopes respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 58 with ISO9001, 28 with Other, and 16 with ISO13485 certification.