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About product and suppliers:
        Alibaba.com offers 6,687 silk structure products. About 4% of these are steel structures, 1% are steel pipes. 

A wide variety of silk structure options are available to you, such as bs, astm. You can also choose from q235, 6000 series. As well as from free samples, paid samples. 

There are 6,729 silk structure suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Singapore, and Taiwan, which supply 99%, 1%, and 1% of silk structure respectively. 

Silk structure products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 1,252 with Other, 840 with ISO9001, and 778 with BSCI certification.