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About product and suppliers:
        Alibaba.com offers 352 soundproof bi-fold door products. About 84% of these are doors, 14% are windows. 

A wide variety of soundproof bi-fold door options are available to you, such as entry doors, sliding doors, and accordion doors. You can also choose from folding, sliding, and swing. As well as from aluminum alloy, plastic, and glass. And whether soundproof bi-fold door is interior, exterior, or commercial. 

There are 352 soundproof bi-fold door suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Bangladesh, and Turkey, which supply 99%, 1%, and 1% of soundproof bi-fold door respectively. 

Soundproof bi-fold door products are most popular in North America, Oceania, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 162 with Other, 82 with ISO9001, and 11 with ISO14001 certification.