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About product and suppliers:
        Alibaba.com offers 363 vertical bi-folding doors products. About 69% of these are doors, 1% are shower doors. 

A wide variety of vertical bi-folding doors options are available to you, such as composite, aluminum alloy. You can also choose from free samples, paid samples. 

There are 361 vertical bi-folding doors suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Turkey, and Hong Kong, which supply 99%, 1%, and 1% of vertical bi-folding doors respectively. 

Vertical bi-folding doors products are most popular in Oceania, North America, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 124 with ISO9001, 87 with Other, and 15 with ISO14001 certification.