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About product and suppliers:
        Alibaba.com offers 7,796 steel back door products. About 3% of these are doors, 1% are car doors, and 1% are windows. 

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

There are 7,856 steel back door suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 99%, 1%, and 1% of steel back door respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 4,210 with ISO9001, 3,524 with Other, and 551 with ISO14001 certification.