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About product and suppliers:
        Alibaba.com offers 14,263 bare material products. About 39% of these are steel pipes, 1% are insulation materials & elements, and 1% are metal building materials. 

A wide variety of bare material options are available to you, such as 100% polyester, steel. You can also choose from free samples, paid samples. 

There are 14,259 bare material suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 99%, 1%, and 1% of bare material respectively. 

Bare material products are most popular in Mid East, Southeast Asia, and South America. 

You can ensure product safety by selecting from certified suppliers, including 4,690 with ISO9001, 1,354 with Other, and 749 with ISO14001 certification.