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About product and suppliers:
        Alibaba.com offers 801 metal expandable barrier products. About 45% of these are traffic barrier, 20% are fencing, trellis & gates. 

A wide variety of metal expandable barrier options are available to you, such as free samples, paid samples. 

There are 725 metal expandable barrier suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Singapore, and Hong Kong, which supply 97%, 2%, and 1% of metal expandable barrier respectively. 

Metal expandable barrier products are most popular in North America, Western Europe, and Oceania. 

You can ensure product safety by selecting from certified suppliers, including 303 with ISO9001, 115 with Other, and 78 with ISO14001 certification.