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About product and suppliers:
        Alibaba.com offers 2,515 hollow metal door products. About 39% of these are doors. 

A wide variety of hollow metal door options are available to you, such as security doors, special doors, and entry doors. You can also choose from exterior, interior, and commercial. As well as from fire doors, gas tight doors. And whether hollow metal door is free samples, or paid samples. 

There are 2,506 hollow metal door suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 98%, 1%, and 1% of hollow metal door respectively. 

Hollow metal door products are most popular in Western Europe, Eastern Asia, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 433 with ISO9001, 221 with Other, and 107 with ISO14001 certification.