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About product and suppliers:
        Alibaba.com offers 38,076 back door products. About 1% of these are doors, 1% are shower doors, and 1% are windows. 

A wide variety of back door options are available to you, such as entry doors, security doors, and accordion doors. You can also choose from steel, mdf, and composite. As well as from exterior, interior, and commercial. And whether back door is swing, folding, or sliding. 

There are 37,875 back door suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Pakistan, and India, which supply 96%, 1%, and 1% of back door respectively. 

Back door products are most popular in North America, Domestic Market, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 10,248 with Other, 10,160 with ISO9001, and 2,570 with ISO14001 certification.
        
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